Question

A pair of sunglasses is on sale for $144. This is 10%

less than the original price. Work out the original price of the sunglasses

Answer 1

Answer: $160

Step-by-step explanation: As a pair of sunglasses, or "x", is 144 when reduced by 10% (90% in total), you can assume 90% of x = 144. To get rid of the 90, or 9/10, multiply both sides by its reciprocal, or 10/9. 90% x 10/9 = 1 (left with only x), and 144 x 9 / 10 = 160.