Question

A sweater is on sale for 20% off the original price, x. Which statement explains why x−0.2x and 0.8x can each find the sale price of the sweater?
A. A decrease of 2% is the same as multiplying by 80%.
B.A decrease of 20% is the same as multiplying by 80%.
C. An increase of 20% is the same as dividing by 80%.
D.An increase of 20% is the same as multiplying by 80%.

Answer 1

The correct answer is B: A decrease of 20% is the same as multiplying by 80%.. This means that paying 80% (0.8x) and paying the full price with 20% off (0.2x) is exactly the same thing.