Author 
Message 
TAGS:

Hide Tags

Intern
Joined: 22 Jul 2010
Posts: 32

In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
26 Jul 2010, 02:53
1
This post received KUDOS
30
This post was BOOKMARKED
Question Stats:
56% (01:32) correct 44% (01:55) wrong based on 706 sessions
HideShow timer Statistics
In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products? A. 5 B. 10 C. 15 D. 20 E. 25
Official Answer and Stats are available only to registered users. Register/ Login.



Math Expert
Joined: 02 Sep 2009
Posts: 43898

In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
26 Jul 2010, 03:27
6
This post received KUDOS
Expert's post
5
This post was BOOKMARKED
In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products? A. 5 B. 10 C. 15 D. 20 E. 25[/quote] As 85% of those surveyed liked at least one of three products then 15% liked none of three products. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked three product} + {liked none of three products} \(100=50+30+20x2*5+15\) > \(x=5\), so 5 people liked exactly two products. More than one product liked those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5 + 5 = 10% liked more than one product. Answer: B. For more check ADVANCED OVERLAPPING SETS PROBLEMSHope it helps.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Intern
Joined: 16 Jul 2010
Posts: 18

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
27 Jul 2010, 10:34
1
This post received KUDOS
Bunuel wrote: Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products}
100=50+30+20x2*5+15 > x=5, so 5 people liked exactly two products. More than one product liked those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5=10% liked more than one product.
Answer: B.
Bunuel, you are close but have a small error as highlighted in red above and fixed in green below. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products} + {liked exactly three product} + {liked none of three products} 100=50+30+20x +5+15 > x=15, so 15 people liked exactly two products. "More than one product liked" equals those who liked exactly two products, (15%) plus those who liked exactly three products (5%), so 15+5= 20% liked more than one productAnswer: D
_________________
If you find my posts useful, please award me some Kudos!



Math Expert
Joined: 02 Sep 2009
Posts: 43898

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
27 Jul 2010, 10:47
dauntingmcgee wrote: Bunuel wrote: Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products}
100=50+30+20x2*5+15 > x=5, so 5 people liked exactly two products. More than one product liked is equivalent to those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5=10% liked more than one product.
Answer: B.
Bunuel, you are close but have a small error as highlighted in red above and fixed in green below. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products} + {liked exactly three product} + {liked none of three products} 100=50+30+20x +5+15 > x=15, so 15 people liked exactly two products. More than one product liked those who liked exactly two products, (15%) plus those who liked exactly three products (5%), so 15+5= 20% liked more than one productAnswer: D Please follow this link: formulaefor3overlappingsets69014.html In my post in the end of the first page I explain the difference in two formulas: the one I used (right one for THIS question) and the one you propose (wrong for THIS question). Hope it helps.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Intern
Joined: 16 Jul 2010
Posts: 18

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
27 Jul 2010, 10:50
1
This post received KUDOS
Bunuel wrote: dauntingmcgee wrote: Bunuel wrote: Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products}
100=50+30+20x2*5+15 > x=5, so 5 people liked exactly two products. More than one product liked is equivalent to those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5=10% liked more than one product.
Answer: B.
Bunuel, you are close but have a small error as highlighted in red above and fixed in green below. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products} + {liked exactly three product} + {liked none of three products} 100=50+30+20x +5+15 > x=15, so 15 people liked exactly two products. More than one product liked those who liked exactly two products, (15%) plus those who liked exactly three products (5%), so 15+5= 20% liked more than one productAnswer: D Please follow this link: formulaefor3overlappingsets69014.html In my post in the end of the first page I explain the difference in two formulas: the one I used (right one for THIS question) and the one you propose (wrong for THIS question). Hope it helps. My apologies, you are quite correct. I should not have doubted the awesome power of Bunuel
_________________
If you find my posts useful, please award me some Kudos!



Manager
Joined: 26 Dec 2011
Posts: 111

Re: In a consumer survey, 85% of those surveyed [#permalink]
Show Tags
13 Jul 2012, 04:08
Hi Bunuel...I was confused with the language..it says 50% of those.. is it 50% of 85% or 50% of whole? From your solution looks like latter..But do you agree that such language should be more clear? or am I missing something?



Math Expert
Joined: 02 Sep 2009
Posts: 43898

Re: In a consumer survey, 85% of those surveyed [#permalink]
Show Tags
13 Jul 2012, 04:17



Manager
Joined: 06 Jun 2012
Posts: 140

Re: In a consumer survey, 85% of those surveyed [#permalink]
Show Tags
19 Mar 2013, 02:46
Bunuel wrote: pavanpuneet wrote: Hi Bunuel...I was confused with the language..it says 50% of those.. is it 50% of 85% or 50% of whole? From your solution looks like latter..But do you agree that such language should be more clear? or am I missing something? For me the language is clear enough. It says "50% of those asked", so "50% of those surveyed". Hi Bunuel, I was also confused with the language as it said 50% liked A, 30% liked B and 20% liked C, which means 100% liked atleast one of the 3 products. Whereas the question stated that 15% dint like any of the 3 products! Whats wrong with my reasoning? Thanks for your response
_________________
Please give Kudos if you like the post



Math Expert
Joined: 02 Sep 2009
Posts: 43898

Re: In a consumer survey, 85% of those surveyed [#permalink]
Show Tags
20 Mar 2013, 03:55
summer101 wrote: Bunuel wrote: pavanpuneet wrote: Hi Bunuel...I was confused with the language..it says 50% of those.. is it 50% of 85% or 50% of whole? From your solution looks like latter..But do you agree that such language should be more clear? or am I missing something? For me the language is clear enough. It says "50% of those asked", so "50% of those surveyed". Hi Bunuel, I was also confused with the language as it said 50% liked A, 30% liked B and 20% liked C, which means 100% liked atleast one of the 3 products. Whereas the question stated that 15% dint like any of the 3 products! Whats wrong with my reasoning? Thanks for your response 50% liked product 1 does not mean that 50% liked ONLY product 1. 30% liked product 2 does not mean that 30% liked ONLY product 2. 20% liked product 3 does not mean that 20% liked ONLY product 3. Check the link provided here: inaconsumersurvey85ofthosesurveyedlikedatleast98018.html#p754585
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Retired Moderator
Joined: 27 Aug 2012
Posts: 1175

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
09 Aug 2013, 07:28
2
This post received KUDOS
Bunuel wrote: mitmat wrote: Can someone help me how to solve this question...thanks in advance...
In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products?
A) 5
B) 10
C) 15
D) 20
E) 25 As 85% of those surveyed liked at least one of three products then 15% liked none of three products. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products} \(100=50+30+20x2*5+15\) > \(x=5\), so 5 people liked exactly two products. More than one product liked those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5= 10% liked more than one product. Answer: B. For more check ADVANCED OVERLAPPING SETS PROBLEMSHope it helps. Hi Bunuel, Can you please clarify if we're to use first formula how the solution would look like? If we consider '\(x=5\)' to be the overlaps of 3 sets A,B,C and overlaps of A&B, B&C, C&A; then eqn. should be\(100=50+30+20x+5+15\) , So, x=20, now subtracting 2*5 (as 5 is taken thrice within x and qs demands 'at least one' so it should be considered once) So,x=2010=10... This is also fine. Right?
_________________
UPDATED : eGMAT SC ResourcesConsolidated  ALL RC ResourcesConsolidated  ALL SC ResourcesConsolidated  UPDATED : AWA compilations109 Analysis of Argument Essays  GMAC's IR Prep Tool
Calling all Columbia (CBS) MBA Applicants: (2018 Intake) Class of 2020 !!! NEW !!!
GMAT Club guide  OG 111213  Veritas Blog  Manhattan GMAT Blog
KUDOS please, if you like the post or if it helps



Senior Manager
Joined: 10 Jul 2013
Posts: 324

Re: In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
09 Aug 2013, 12:43
mitmat wrote: In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products?
A. 5 B. 10 C. 15 D. 20 E. 25 ................. More than one = A+B+C (A n B n C)  (A u B u C) = 50+30+20585 = 10%
_________________
Asif vai.....



Director
Joined: 03 Aug 2012
Posts: 896
Concentration: General Management, General Management
GMAT 1: 630 Q47 V29 GMAT 2: 680 Q50 V32
GPA: 3.7
WE: Information Technology (Investment Banking)

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
17 Aug 2013, 04:01
Bunuel wrote: mitmat wrote: Can someone help me how to solve this question...thanks in advance...
In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products?
A) 5
B) 10
C) 15
D) 20
E) 25 As 85% of those surveyed liked at least one of three products then 15% liked none of three products. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products} \(100=50+30+20x2*5+15\) > \(x=5\), so 5 people liked exactly two products. More than one product liked those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5= 10% liked more than one product. Answer: B. For more check ADVANCED OVERLAPPING SETS PROBLEMSHope it helps. Hi Bunuel, Somehow I am unable to get the question itself. When it says that 85% is to be distributed in 3 sets as per Venn diagram and 15% is not distributed among the 3 sets , it is understandable. However, when it says 50% for 1 , 30% for 2 and 20% for 3 it is confusing as to whether it says that 50% is only '1' or 50% is for FULL '1'. Case 2: If 50% is distributed in FULL 1 As per diagram shown : 1=50%=a+e+d+g Case1: 1=50%=a Please advise ! Rgds, TGC !
Attachments
general.JPG [ 12.55 KiB  Viewed 9032 times ]
_________________
Rgds, TGC! _____________________________________________________________________ I Assisted You => KUDOS Please _____________________________________________________________________________



Manager
Joined: 31 Mar 2013
Posts: 70
Location: India
GPA: 3.02

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
12 Sep 2013, 00:26
Bunuel wrote: mitmat wrote: Can someone help me how to solve this question...thanks in advance...
In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products?
A) 5
B) 10
C) 15
D) 20
E) 25 As 85% of those surveyed liked at least one of three products then 15% liked none of three products. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products} \(100=50+30+20x2*5+15\) > \(x=5\), so 5 people liked exactly two products. More than one product liked those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5= 10% liked more than one product. Answer: B. For more check ADVANCED OVERLAPPING SETS PROBLEMSHope it helps. Hi Bunuel, I'm sorry to ask this in spite of so many explanations around. What does "more than 1 product" mean? Shouldn't it be the same as "2 group overlaps"? My understanding is that 2 group overlaps will include both 2 group and 3 group overlaps. Hence, formula 1 should be sufficient, right? I know i am going wrong somewhere. Could you clarify please?



Math Expert
Joined: 02 Sep 2009
Posts: 43898

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
13 Sep 2013, 01:18
emailmkarthik wrote: Bunuel wrote: mitmat wrote: Can someone help me how to solve this question...thanks in advance...
In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products?
A) 5
B) 10
C) 15
D) 20
E) 25 As 85% of those surveyed liked at least one of three products then 15% liked none of three products. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products} \(100=50+30+20x2*5+15\) > \(x=5\), so 5 people liked exactly two products. More than one product liked those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5= 10% liked more than one product. Answer: B. For more check ADVANCED OVERLAPPING SETS PROBLEMSHope it helps. Hi Bunuel, I'm sorry to ask this in spite of so many explanations around. What does "more than 1 product" mean? Shouldn't it be the same as "2 group overlaps"? My understanding is that 2 group overlaps will include both 2 group and 3 group overlaps. Hence, formula 1 should be sufficient, right? I know i am going wrong somewhere. Could you clarify please? More than one means exactly 2 or exactly 3, regions e, d, f, and g in the diagram below: For more check ADVANCED OVERLAPPING SETS PROBLEMSHope it helps.
_________________
New to the Math Forum? Please read this: Ultimate GMAT Quantitative Megathread  All You Need for Quant  PLEASE READ AND FOLLOW: 12 Rules for Posting!!! Resources: GMAT Math Book  Triangles  Polygons  Coordinate Geometry  Factorials  Circles  Number Theory  Remainders; 8. Overlapping Sets  PDF of Math Book; 10. Remainders  GMAT Prep Software Analysis  SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS)  Tricky questions from previous years.
Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
What are GMAT Club Tests? Extrahard Quant Tests with Brilliant Analytics



Intern
Joined: 01 Apr 2013
Posts: 19

Re: Set theoryNeed help in solving this [#permalink]
Show Tags
18 Mar 2014, 20:21
Thank you for providing this link bagdbmba. I tried using the other formula and, although I realize the one Bunnuel used is better for this problem, I was having trouble understanding how to link back to answer. This makes perfect sense in terms of bridging the formulas! bagdbmba wrote: Bunuel wrote: mitmat wrote: Can someone help me how to solve this question...thanks in advance...
In a consumer survey, 85% of those surveyed liked at least one of three products: 1, 2, and 3. 50% of those asked liked product 1, 30% liked product 2, and 20% liked product 3. If 5% of the people in the survey liked all three of the products, what percentage of the survey participants liked more than one of the three products?
A) 5
B) 10
C) 15
D) 20
E) 25 As 85% of those surveyed liked at least one of three products then 15% liked none of three products. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products} \(100=50+30+20x2*5+15\) > \(x=5\), so 5 people liked exactly two products. More than one product liked those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5= 10% liked more than one product. Answer: B. For more check ADVANCED OVERLAPPING SETS PROBLEMSHope it helps. Hi Bunuel, Can you please clarify if we're to use first formula how the solution would look like? If we consider '\(x=5\)' to be the overlaps of 3 sets A,B,C and overlaps of A&B, B&C, C&A; then eqn. should be\(100=50+30+20x+5+15\) , So, x=20, now subtracting 2*5 (as 5 is taken thrice within x and qs demands 'at least one' so it should be considered once) So,x=2010=10... This is also fine. Right?



Intern
Joined: 31 May 2014
Posts: 25

Re: In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
31 May 2014, 11:42
Hi all, I use the 2nd formula and get the desired 5 and 5 for "like exactly 2 products" and "like exactly 3 products". My question: If the number of people who like 2 products equals the number of people who like 3 products, doesn't this mean that it must be the exact same five people? And hence the number of people who like more than 1 product is five, not ten?? Thx in advance.



Director
Joined: 10 Mar 2013
Posts: 584
Location: Germany
Concentration: Finance, Entrepreneurship
GPA: 3.88
WE: Information Technology (Consulting)

In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
14 Jun 2015, 04:27
Bunuel wrote: dauntingmcgee wrote: Bunuel wrote: Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products}  2*{liked exactly three product} + {liked none of three products}
100=50+30+20x2*5+15 > x=5, so 5 people liked exactly two products. More than one product liked is equivalent to those who liked exactly two products, (5%) plus those who liked exactly three products (5%), so 5+5=10% liked more than one product.
Answer: B.
Bunuel, you are close but have a small error as highlighted in red above and fixed in green below. Total = {liked product 1} + {liked product 2} + {liked product 3}  {liked exactly two products} + {liked exactly three product} + {liked none of three products} 100=50+30+20x +5+15 > x=15, so 15 people liked exactly two products. More than one product liked those who liked exactly two products, (15%) plus those who liked exactly three products (5%), so 15+5= 20% liked more than one productAnswer: D Please follow this link: formulaefor3overlappingsets69014.html In my post in the end of the first page I explain the difference in two formulas: the one I used (right one for THIS question) and the one you propose (wrong for THIS question). Hope it helps. Hi Bunuel, I could be wrong, but the first formula is not wrong for this example either, it's just another approach: First Formula: 100=50+30+20X(Sum of 2Group overlaps)+5(all 3)+15(Neither) X=20, but we have to substract 2*all 3 overlaps > 202*5=10
_________________
When you’re up, your friends know who you are. When you’re down, you know who your friends are.
Share some Kudos, if my posts help you. Thank you !
800Score ONLY QUANT CAT1 51, CAT2 50, CAT3 50 GMAT PREP 670 MGMAT CAT 630 KAPLAN CAT 660



Intern
Status: one month left...
Joined: 21 Jul 2015
Posts: 4
Location: China
Concentration: Accounting, Finance
GPA: 3.65

Re: In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
19 Sep 2015, 23:33
Hi Bunuel, I am also confused with the language, and I know I am wrong, However, I failed to know what's wrong with my thought. here is my way of thinking. Could you please pinpoint the problem? Thanks. I assume there are 100 people being surveyed, and 85 people like at least one of the product, accordingly, 15 people do not like any product. And then it said that 50% of those asked liked product 1. I decided to use 85 x 50% instead of 100 x 50% because I think the 50 % of people like product, so I should eliminate the 15 people who do not like any product. I just don't know what's wrong with my reasoning.



Intern
Joined: 31 Oct 2015
Posts: 36

In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
03 Jan 2016, 06:40
Please refer to the attached image. Thanks!
Attachments
SmartSelectImage_20160103092724.png [ 104.72 KiB  Viewed 2409 times ]
Last edited by kham71 on 03 Jan 2016, 06:50, edited 1 time in total.



Intern
Joined: 11 Jul 2016
Posts: 1

Re: In a consumer survey, 85% of those surveyed liked at least [#permalink]
Show Tags
15 Oct 2016, 20:53
Why aren't we using the first formula in this?? the question states more than one product, so it should be 2 or more which requires the first formula? 10% is just "exactly two" products... Please help




Re: In a consumer survey, 85% of those surveyed liked at least
[#permalink]
15 Oct 2016, 20:53



Go to page
1 2
Next
[ 27 posts ]



