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# Fox jeans sells for $15 a pair and Pony Jeans sells for$18

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Manager
Joined: 01 Sep 2003
Posts: 73
Location: NYC
Fox jeans sells for $15 a pair and Pony Jeans sells for$18 [#permalink]

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30 Dec 2003, 14:21
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Fox jeans sells for $15 a pair and Pony Jeans sells for$18 a pair. During a sale, these 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 of Pony jeans. If the sum of the discount is 22%, what is the discount rate on Pony jeans? Please explain how you got your answer..... Last edited by ftoor on 30 Dec 2003, 14:59, edited 1 time in total. Manager Joined: 01 Sep 2003 Posts: 73 Location: NYC DJ [#permalink] ### Show Tags 30 Dec 2003, 18:55 DJ, can you explain how you got your answer? GMAT Club Legend Joined: 15 Dec 2003 Posts: 4288 ### Show Tags 30 Dec 2003, 19:41 Indeed a very hard and certainly very calculation intensive problem. An explanation here would be appreciated here. _________________ Best Regards, Paul Director Joined: 13 Nov 2003 Posts: 960 Location: Florida Re: DJ [#permalink] ### Show Tags 30 Dec 2003, 21:21 ftoor wrote: DJ, can you explain how you got your answer? not hard at all.. 3*X%*15 + 2*Y%*18=9 --- (1) X + Y = 22 -------------------(2) (1) will be.. 45X + 36Y = 900 solve for Y Director Joined: 28 Oct 2003 Posts: 501 Location: 55405 ### Show Tags 30 Dec 2003, 22:24 This problem would be better written as a DS problem. SVP Joined: 30 Oct 2003 Posts: 1790 Location: NewJersey USA ### Show Tags 10 Jan 2004, 21:12 total cost of shopping with normal prices let F be discount on fox and P be discount on pony we know that 3*15 * f/100 + 2*18 * p/100 = 9 0.45f + 0.36p = 9 and also f+0.36/0.45p = 9/0.45 = 20 f+p = 22 from these two equations p-0.36/0.45p = 2 p( 0.09 ) = 0.45*2 = 0.9 p = 10% 10 Jan 2004, 21:12 Display posts from previous: Sort by # Fox jeans sells for$15 a pair and Pony Jeans sells for \$18

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