Homework Help: college alg

Posted by love on Tuesday, January 31, 2012 at 6:09pm.

A particular style of shoes costs the dealer $97 per pair. At what price should the dealer mark them so he can sell them at a 10% discount off the selling price and still make a 30%profit?

college alg - Reiny, Tuesday, January 31, 2012 at 6:28pm
let selling price be x

.9x = 1.3(97)
x = 126.1/.9 = 140.11

check
marked selling price = 140.11
actual selling price = .9(140.11) = 126.10

profit = 126.10-97 = 29.10
percentage of profit based on cost price
= 29.10/97 = .29998969
= 30%
college alg - love, Tuesday, January 31, 2012 at 6:36pm
i wanted to ask where did u get .9x from and 1.3 from
college alg - Reiny, Tuesday, January 31, 2012 at 8:02pm
A 10% discount means to take away 10% , leaving 90% or .9

a 30 % profit is 100% + 30% = 130% = 1.3

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