Need help??

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Need help??

by Jpsphat » Thu Oct 15, 2009 9:52 am
1. If a discount of 20% off the retail price of a desk saves Mark $45, how much did he pay for the desk?

A. $145
B. $160
C. $180
D. $210
E. $215

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by fiercepoint » Thu Oct 15, 2009 10:15 am
C. $180

$45 is 20% or 1/5 of the original price so the price paid after the discount is 80% or 4/5 of the original price, since we know that 1/5 is 45 we can multiply that by 4 and get 4/5 = 180