John bought a camera on sale that normally costs $160. if the price was reduced 20% during the sale, what was the sale price of the camera?

(a) $120
(b) $124
(c) $128
(d) $140

explain to me how to get the answer.

There are two ways to get the answer of 128



Method 1

sale price = (original price) - (20% of original price)
sale price = 160 - (20% of 160)
sale price = 160 - (0.2*160)
sale price = 160 - 32
sale price = 128



Method 2

Sale price = 80% of original price
Sale price = 0.8*(original price)
Sale price = 0.8*(160)
Sale price = 128

The discount is 20% so the leftover bit (80%) is the sale price