SOLUTION: amy paid $68.21 for a pair of running shoes during a 15% off sale, what was the reg price?

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Question 290493: amy paid $68.21 for a pair of running shoes during a 15% off sale, what was the reg price?
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
amy paid $68.21 for a pair of running shoes during a 15% off sale, what was the reg price?
.
Let r = regular price
then
r - .15r = 68.21
r(1 - .15) = 68.21
r(.85) = 68.21
r = 68.21/.85
r = $80.25