It is currently 20 Feb 2018, 01:53

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.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Company Z only sells chairs and tables. what percent of its

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

2 KUDOS received
Intern
Intern
avatar
Joined: 25 Sep 2010
Posts: 18
Company Z only sells chairs and tables. what percent of its [#permalink]

Show Tags

New post 29 Oct 2010, 03:23
2
This post received
KUDOS
6
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

72% (01:14) correct 28% (01:13) wrong based on 366 sessions

HideShow timer Statistics

Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?

(1) In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
(2) In 2008, Company Z sold 20% fewer tables than chairs.
[Reveal] Spoiler: OA

Last edited by Bunuel on 04 Jan 2013, 05:36, edited 1 time in total.
Edited the question.
Expert Post
6 KUDOS received
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 43828
Re: DS question : need help [#permalink]

Show Tags

New post 29 Oct 2010, 03:35
6
This post received
KUDOS
Expert's post
6
This post was
BOOKMARKED
satishreddy wrote:
Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?
1. In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
2. In 2008, Company Z sold 20% fewer tables than chairs.


Revenue=number of items sold * price of an item.

\(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=?\)

(1) \(p_t=1.1*p_c\). Not sufficient.
(2) \(n_t=0.8*n_c\). Not sufficient.

(1)+(2) \(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=\frac{0.8*n_c*1.1*p_c}{0.8*n_c*1.1*p_c+n_c*p_c}=\frac{0.8*1.1}{0.8*1.1*+1}\). Sufficient.

Answer: C.
_________________

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?
Extra-hard Quant Tests with Brilliant Analytics

Intern
Intern
User avatar
Joined: 11 Oct 2013
Posts: 18
Location: United Kingdom
Concentration: General Management, Leadership
GMAT 1: 490 Q32 V25
GPA: 3.9
WE: Other (Other)
GMAT ToolKit User
Re: DS question : need help [#permalink]

Show Tags

New post 26 Dec 2013, 13:45
Bunuel wrote:
satishreddy wrote:
Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?
1. In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
2. In 2008, Company Z sold 20% fewer tables than chairs.


Revenue=number of items sold * price of an item.

\(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=?\)

(1) \(p_t=1.1*p_c\). Not sufficient.
(2) \(n_t=0.8*n_c\). Not sufficient.

(1)+(2) \(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=\frac{0.8*n_c*1.1*p_c}{0.8*n_c*1.1*p_c+n_c*p_c}=\frac{0.8*1.1}{0.8*1.1*+1}\). Sufficient.

Answer: C.



dear Bunuel,
thanks for the explanation but I have a question:

\(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=?\)
is this part not going to be equal to 1?

many thanks
_________________

Good things come to those who wait… greater things come to those who get off their ass and do anything to make it happen...

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 43828
Re: DS question : need help [#permalink]

Show Tags

New post 27 Dec 2013, 02:39
3111987 wrote:
Bunuel wrote:
satishreddy wrote:
Company Z only sells chairs and tables. what percent of its revenue in 2008 did company derive from its sales of tables?
1. In 2008, the average price of tables sold by company Z was 10% higher than the average price of chairs sold by Company Z?
2. In 2008, Company Z sold 20% fewer tables than chairs.


Revenue=number of items sold * price of an item.

\(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=?\)

(1) \(p_t=1.1*p_c\). Not sufficient.
(2) \(n_t=0.8*n_c\). Not sufficient.

(1)+(2) \(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=\frac{0.8*n_c*1.1*p_c}{0.8*n_c*1.1*p_c+n_c*p_c}=\frac{0.8*1.1}{0.8*1.1*+1}\). Sufficient.

Answer: C.



dear Bunuel,
thanks for the explanation but I have a question:

\(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=?\)
is this part not going to be equal to 1?

many thanks


No. \(\frac{n_t*p_t}{n_t*p_t+n_c*p_c}=\frac{x}{x+y}\). This expression is not necessarily equal to 1.
_________________

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?
Extra-hard Quant Tests with Brilliant Analytics

Intern
Intern
avatar
B
Joined: 24 Nov 2016
Posts: 32
CAT Tests
Re: Company Z only sells chairs and tables. what percent of its [#permalink]

Show Tags

New post 10 Oct 2017, 17:05
Hey guys,

i know this topic is frm 5 years ago, but i got stuck on MGMAT explanation.

Ok, I found how Rc and Rt are related, but I cant figure how it is conclusive to find how Rc is related for total revenue.

Since

Revenue = Rt + Rc

Rt = Qt x Pt

Rc = Qc x PC

And we found that Rt = 0.88 Rc

If I replace Rt in revenue equation my result will be

Revenue = 0.88 Rc + Rc

What could I conclude with this final equation??
Re: Company Z only sells chairs and tables. what percent of its   [#permalink] 10 Oct 2017, 17:05
Display posts from previous: Sort by

Company Z only sells chairs and tables. what percent of its

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.