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

It is currently 22 Oct 2014, 08:00

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

Fox jeans regularly sell for $15 a pair and pony jeans

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 12 Sep 2005
Posts: 65
Location: USofA
Followers: 1

Kudos [?]: 1 [0], given: 0

Fox jeans regularly sell for $15 a pair and pony jeans [#permalink] New post 03 Sep 2006, 10:01
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Fox jeans regularly sell for $15 a pair and pony jeans regularly sell for $18 a pair. During a sale these regular unit prices are discounted at different rates so that a total of $9 is saved by purchasing 5 pair of jean: 3 pairs of Fox and 2 pairs of Pony jeans. If the sume of the two discounts rates is 22 percent, what is the discount rate on Pony jeans?

A- 9%
B- 10%
C- 11%
D- 12%
E- 15%
Manager
Manager
avatar
Joined: 22 Aug 2006
Posts: 57
Location: Moscow, Russia
Followers: 1

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

 [#permalink] New post 03 Sep 2006, 12:18
Looks like the only way to do it is to plug in the numbers (e.g. Fox total undiscounted is $45, Pony total undiscounted is $36. Then if Pony is 9% off, Fox is 13% off, calculated the discounted totals, subtract them from the original, check if the diffferences add up to 9). B is the answer so it can be done in under 2 minutes if you can multiply and substract fast.

I suspect there is more eklegant solution using the derivatives but can't find it
_________________

________________________________
"Amicus Plato, sed magic amica veritas"

Senior Manager
Senior Manager
avatar
Joined: 14 Jul 2005
Posts: 405
Followers: 1

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

 [#permalink] New post 03 Sep 2006, 15:02
Got B

An easier was to look at this prob. would be to say average discount per jean = 9/5 = $1.80

Now 1.8 is 10% of pony and testing with 12% for fox gives you the answer
Senior Manager
Senior Manager
avatar
Joined: 11 May 2006
Posts: 263
Followers: 1

Kudos [?]: 5 [0], given: 0

 [#permalink] New post 03 Sep 2006, 22:08
before discount:
45$ were spent on Fox and 36$ were spent on pony.
say discount on fox = x% then discount on pony = 22-x

=> 45x/100 + 36(22-x)/100 = 9

=> x = 12

so discount on pony = 22-12 = 10%

Last edited by iced_tea on 03 Sep 2006, 22:17, edited 1 time in total.
  [#permalink] 03 Sep 2006, 22:08
    Similar topics Author Replies Last post
Similar
Topics:
Fox jeans regularly sell for $15 a pair, and Pony jeans Liquid 1 06 Apr 2008, 17:08
Fox jeans regularly sell for $15 a pair and Pony jeans butter 6 29 May 2006, 13:46
Fox Jeans regularly sells for $15 a pair and Pony jeans joemama142000 5 06 Nov 2005, 23:50
Fox jeans regularly sell for $15 a pair and Pony jeans Janice 4 09 Jan 2005, 16:23
Fox jeans regularly sell for $15 a pair and Pony jeans crackgmat04 4 03 Nov 2004, 20:54
Display posts from previous: Sort by

Fox jeans regularly sell for $15 a pair and pony jeans

  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®.