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PS-Discount [#permalink] New post 07 Dec 2008, 06:12
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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%
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Re: PS-Discount [#permalink] New post 07 Dec 2008, 07:32
B

Given data

Fox jeans sell for $15 a pair and Pony jeans sell for $18 a pair.
Total discount = $9
So letz take discount % on fox jeans as X and discount % on pony jeans as Y

Also Since 3 pairs of FOX and 2 pairs of pony were sold.
45X + 36Y = 900 ------- 1

Sum of discount % = 22

SO X + Y = 22 ------- 2

Solvng 1 and 2 --- y = 10
Re: PS-Discount   [#permalink] 07 Dec 2008, 07:32
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