sum of two discount rate is 22%

let X be the total discount offered on Fox Jeans
Y be the discount offered on Pony Jeans

Therefore X+Y=22..........(1)

Also given the total amount of discount on 5 pairs of Jean is 9$

Discount (in $) on Fox Jeans ------- (3*15*X/100)
Discount in $ on Pony Jeans ---------(2*18*Y/100)

.45*X + .36*Y =9................(2)

Solving above equations u will get Y as 10%

Hope this helps..

Aiming High

Quote

sudhir3127: Legendary Member; Posts: 829; Joined: Mon Jul 07, 2008 10:09 pm; Location: INDIA; Thanked: 84 times; Followed by:3 members

Re: sum of two discount rate is 22%

by sudhir3127 » Wed Oct 15, 2008 7:43 am

ifthyder wrote:explaination ??

Normal price = 3 x 15 + 2 x 18 = 81

Give

After discount 45x + 36y = 900 .......................................1

Given
x + y = 22 ....................................................................2

Solve 1 and 2 for y

y = 10%

hope that helps..

Quote

ifthyder: Master | Next Rank: 500 Posts; Posts: 118; Joined: Fri Apr 18, 2008 4:58 am; Thanked: 1 times

Re: sum of two discount rate is 22%

by ifthyder » Wed Oct 15, 2008 8:36 am

sudhir3127 wrote:
ifthyder wrote:explaination ??
Normal price = 3 x 15 + 2 x 18 = 81

Give

After discount 45x + 36y = 900 .......................................1
how could you got 900 wasn't 90 or 900?
Given
x + y = 22 ....................................................................2

Solve 1 and 2 for y

y = 10%

hope that helps..

Quote

rohangupta83: Legendary Member; Posts: 541; Joined: Thu May 31, 2007 6:44 pm; Location: UK; Thanked: 21 times; Followed by:3 members; GMAT Score:680

by rohangupta83 » Thu Oct 16, 2008 2:19 am

imo B

y = 10

as explained by Sudhir3127 and Krazy800

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raunekk: Legendary Member; Posts: 1159; Joined: Wed Apr 16, 2008 10:35 pm; Thanked: 56 times

by raunekk » Thu Oct 16, 2008 3:21 am

imo: B

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