2014 AMC 10A Problem 11
Problem 11 of 25IntermediateAlgebra
A customer who intends to purchase an appliance has three coupons, only one of which may be used:
Coupon off the listed price if the listed price is at least
Coupon off the listed price if the listed price is at least
Coupon off the amount by which the listed price exceeds
For which of the following listed prices will coupon offer a greater price reduction than either coupon or coupon
Answer choices
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Solution
Let us analyze what these coupons do to an arbitrary price,
Coupon changes this price to Coupon changes the price to Coupon changes the price to
We want and Solving both gives us
The only answer choice that works is
Thus, C is the correct answer.