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Fox jeans regularly sell for $15 a pair and Pony jeans regularly sell [#permalink] ### Show Tags 03 Nov 2004, 20:54 9 This post was BOOKMARKED 00:00 Difficulty: 85% (hard) Question Stats: 59% (03:17) correct 41% (03:22) wrong based on 218 sessions ### HideShow timer Statistics 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 pairs of jeans: 3 pairs of Fox jeans and 2 pairs of Pony jeans. If the sum 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%

OPEN DISCUSSION OF THIS QUESTION IS HERE: fox-jeans-regularly-sell-for-15-a-pair-and-pony-jeans-88590.html
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04 Nov 2004, 09:26
I think this is a good example where you can use the backsolve approach.

You know that Fox jeans costs $15, and Pony jeans costs$18, you also know that 3 pairs of Fox jeans and 2 pairs of Pony jeans were purchased. So

3(15) = 45 - Fox
2(18) = 36 - Pony

The total discount discount is $9 and you are asked to find the percent discount of pony jeans, so 45(.22 - .X) + 36(.X) = 9 here you can plug in numbers starting with C, 45(.22-.11)+36(.11) = 4.95 + 3.96 = 8.91 not = 9, eliminate Move to B, as C was too small a number so the discount should be at a greater percentage for Fox jeans because we've purchased 3 pairs.. 45(.12) + 36(.10) = 9 and we've got our answer. Senior Manager Joined: 21 Jun 2004 Posts: 339 Followers: 1 Kudos [?]: 10 [1] , given: 0 Re: Fox jeans regularly sell for$15 a pair and Pony jeans regularly sell [#permalink]

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04 Nov 2004, 18:49
1
KUDOS
I tried the backsolve approach . I first tried with 10% and as the number was easy got the answer.

But Venks, when I see your solution, I realize how foolish Iam.

You guyz are just too good. Everyday is a new learning for me.
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28 Sep 2015, 09:57
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Re: Fox jeans regularly sell for $15 a pair and Pony jeans regularly sell [#permalink] ### Show Tags 28 Sep 2015, 22:01 1 This post received KUDOS Expert's post 4 This post was BOOKMARKED crackgmat04 wrote: 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 pairs of jeans: 3 pairs of Fox jeans and 2 pairs of Pony jeans. If the sum 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%

x discount on Pony jeans, (0.22-x) discount on Fox jeans.

Set the equation: 3*15(0.22-x)+2*18x=9 --> x=0.1=10%

OPEN DISCUSSION OF THIS QUESTION IS HERE: fox-jeans-regularly-sell-for-15-a-pair-and-pony-jeans-88590.html
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Re: Fox jeans regularly sell for $15 a pair and Pony jeans regularly sell [#permalink] 28 Sep 2015, 22:01 Similar topics Replies Last post Similar Topics: 1 discount rate on Pony jeans? 3 10 Jul 2011, 19:32 8 A movie theater regularly sells adult tickets for$12 and child ticket 10 30 Jun 2011, 03:44
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