Find all School-related info fast with the new School-Specific MBA Forum

It is currently 19 Apr 2014, 08:04

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If Jim saved a total of $90 in three weeks, how much did he

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Intern
Intern
Joined: 30 Apr 2010
Posts: 23
Location: Texas
Schools: University of Texas - TEMBA
Followers: 0

Kudos [?]: 2 [0], given: 8

GMAT ToolKit User
If Jim saved a total of $90 in three weeks, how much did he [#permalink] New post 05 May 2010, 12:14
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

30% (01:37) correct 70% (00:22) wrong based on 10 sessions
If Jim saved a total of $90 in three weeks, how much did he save in week 2?

1. Jim’s average savings for the first 2 weeks were $20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

A. 1 alone is Sufficient
B. 2 alone is Sufficient
C. Statements together are Sufficient
D. Each alone is Sufficient
E. Neither is Sufficient

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were $20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90

6*S1 = $90

S1 = $15

S2 = $30


I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.
Kaplan Promo CodeKnewton GMAT Discount CodesManhattan GMAT Discount Codes
Senior Manager
Senior Manager
Joined: 01 Feb 2010
Posts: 269
Followers: 1

Kudos [?]: 34 [0], given: 2

GMAT Tests User
Re: How much did Jim save in week 2? [#permalink] New post 05 May 2010, 20:59
TXTDryFly wrote:
If Jim saved a total of $90 in three weeks, how much did he save in week 2?

1. Jim’s average savings for the first 2 weeks were $20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

A. 1 alone is Sufficient
B. 2 alone is Sufficient
C. Statements together are Sufficient
D. Each alone is Sufficient
E. Neither is Sufficient

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were $20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90

6*S1 = $90

S1 = $15

S2 = $30


I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.

I didn't get your point here "Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were $20.” Am I’m missing something? "
1 is not not sufficient as explained by you and 2 is sufficient again as explained by you.
And correct answer is B which means "only II is sufficient to answer alone and 1 is not sufficient to answer alone".
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 17318
Followers: 2876

Kudos [?]: 18399 [0], given: 2350

GMAT Tests User CAT Tests
Re: How much did Jim save in week 2? [#permalink] New post 05 May 2010, 21:23
Expert's post
TXTDryFly wrote:
If Jim saved a total of $90 in three weeks, how much did he save in week 2?

1. Jim’s average savings for the first 2 weeks were $20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were $20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90

6*S1 = $90

S1 = $15

S2 = $30


I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.


Yes, you are right. Statements contradict, which never happens in real GMAT questions.

If statement (1) were "Jim’s average savings for the first 2 weeks were $22.5$" (as you suggested), then there would be no problem with this question.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

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?
25 extra-hard Quant Tests

Intern
Intern
Joined: 30 Apr 2010
Posts: 23
Location: Texas
Schools: University of Texas - TEMBA
Followers: 0

Kudos [?]: 2 [0], given: 8

GMAT ToolKit User
Re: How much did Jim save in week 2? [#permalink] New post 06 May 2010, 08:08
bangalorian2000 wrote:
TXTDryFly wrote:
If Jim saved a total of $90 in three weeks, how much did he save in week 2?

1. Jim’s average savings for the first 2 weeks were $20

2. Jim’s first week’s savings were half of his savings in week 2 and a third of his savings in week 3

A. 1 alone is Sufficient
B. 2 alone is Sufficient
C. Statements together are Sufficient
D. Each alone is Sufficient
E. Neither is Sufficient

The answer is B

Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were $20.” Am I’m missing something?

1 is not sufficient. S1 + S2 = 40. Although S3 can be calculated, the value of S2 cannot be calculated. Consider S1 = 20 and S2 = 20 or S1 = 5 and S2 = 35

2 is sufficient. S2 = 2*S1 and S3 = 3*S1

S1 + 2*S1 + s*S1 = $90

6*S1 = $90

S1 = $15

S2 = $30


I found this question on the MBA Toolkit App: Hard 700+ GMAT Quantitative Questions from GMAT Club Tests.

I didn't get your point here "Even though I got the correct answer, what I don’t understand is how statement one is true. Statement 1 should say “Jim’s average savings for the first 2 weeks were $22.50” not “Jim’s average savings for the first 2 weeks were $20.” Am I’m missing something? "
1 is not not sufficient as explained by you and 2 is sufficient again as explained by you.
And correct answer is B which means "only II is sufficient to answer alone and 1 is not sufficient to answer alone".


My point was that DS statements are always true. Statement #1 is not true.
Manager
Manager
User avatar
Affiliations: The Earth organization, India
Joined: 25 Dec 2010
Posts: 195
WE 1: SAP consultant-IT 2 years
WE 2: Entrepreneur-family business 2 years
Followers: 4

Kudos [?]: 10 [0], given: 12

GMAT Tests User
Re: How much did Jim save in week 2? [#permalink] New post 04 Jun 2011, 01:10
even I found this Q on gmat club app on my iphone, please make the corrections :shock:
_________________

Cheers !!

Quant 47-Striving for 50
Verbal 34-Striving for 40

Manager
Manager
Joined: 05 Jul 2010
Posts: 206
Followers: 1

Kudos [?]: 10 [0], given: 18

GMAT Tests User
Re: How much did Jim save in week 2? [#permalink] New post 04 Jun 2011, 10:49
yes, the question needs modification.
Director
Director
Joined: 01 Feb 2011
Posts: 773
Followers: 12

Kudos [?]: 76 [0], given: 42

GMAT Tests User
Re: How much did Jim save in week 2? [#permalink] New post 04 Jun 2011, 15:13
Yes. This problem needs correction. Even though we can arrive at the answer , it gives two contradictory statements which will never happen in GMAT.



From the statement 2 and stem we can find the first , second and third weeks savings as 15,30 and 45
respectively. And that makes the average of first two weeks 22.5 which contradicts with statement 1


first statement needs to say something like this...

1. the average of first and second weeks average is 22.5
Math Forum Moderator
Joined: 20 Dec 2010
Posts: 2058
Followers: 123

Kudos [?]: 827 [0], given: 376

GMAT Tests User
Re: How much did Jim save in week 2? [#permalink] New post 04 Jun 2011, 15:49
Spidy001 wrote:
Yes. This problem needs correction. Even though we can arrive at the answer , it gives two contradictory statements which will never happen in GMAT.



From the statement 2 and stem we can find the first , second and third weeks savings as 15,30 and 45
respectively. And that makes the average of first two weeks 22.5 which contradicts with statement 1


first statement needs to say something like this...

1. the average of first and second weeks average is 22.5


Concern acknowledged. Necessary action will be taken to rectify the discrepancy.
_________________

~fluke

VP
VP
Status: There is always something new !!
Affiliations: PMI,QAI Global,eXampleCG
Joined: 08 May 2009
Posts: 1368
Followers: 9

Kudos [?]: 121 [0], given: 10

GMAT Tests User
Re: How much did Jim save in week 2? [#permalink] New post 06 Jun 2011, 02:41
b x1= 0.5x2 = 0.33x3
where x1,x2 and x3 are the respective savings for the weeks.

thus x1+x2+x3 = 90 in this x1 can be found out.

B it is.
_________________

Visit -- http://www.sustainable-sphere.com/
Promote Green Business,Sustainable Living and Green Earth !!

Re: How much did Jim save in week 2?   [#permalink] 06 Jun 2011, 02:41
    Similar topics Author Replies Last post
Similar
Topics:
New posts How much did you improve your last 3 weeks of prep? MeddlingKid 6 29 Apr 2008, 06:45
Popular new posts 7 Experts publish their posts in the topic Personal: How much did you save before pursuing your MBA? dominion 34 31 Jul 2008, 22:06
New posts 1 If Jim saved a total of $90 in 3 weeks, how much did he save BarneyStinson 3 25 Feb 2010, 19:53
This topic is locked, you cannot edit posts or make further replies. New 1 Experts publish their posts in the topic A turtle is crossing a field, how many meters total did he AtifS 2 05 Mar 2010, 23:34
Popular new posts 3 Experts publish their posts in the topic If Pat saved $600 of his earnings last month, how much did Bunuel 13 30 Jul 2012, 01:23
Display posts from previous: Sort by

If Jim saved a total of $90 in three weeks, how much did he

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.