Question

A pair of shoes that
originally cost $45 is
30% off. What is the
selling price?

Answer 1

Answer: 31.50 dollars

Work Shown:

30% of 45 = 0.30*45 = 13.50

You save $13.50 and the sale price is 45 - 13.50 = 31.50 dollars

An alternative is to compute

0.70*45 = 31.50

This works because if you save 30%, then you have to pay the remaining 70%