Question

What is the approach to solving this kind of problem?: "A shirt costs $12 after a 15% discount. What was the original price of the shirt?"

Answer 1

Original price = 100%

100% - 15% = 85%

So $12 = 85% of original price


`x \rightarrow original \ price`

12 = 85/100x
12 = 0,85x
12/0,85 = x
14,12 ≈ x


`ANSWER = \$14,12`

Answer 2

The approach is ...

$12 = 85% of (original price)

$12 = 0.85 x (original price)

Divide each side by 0.85 :

$12 / 0.85 = original price