Question

Jackson paid $31.50 for a new video game that was on sale 25% off. What was the original price of the video game?

Answer 1

42

Explanation:

Method 1

100 - 25 = 75 subtract the percent off from 100

31.50 × 100 = 3150 multiply the new price to 100

3150 ÷ 75 divide the results

$42

Method 2

New price = (1 ± r) original price

r = 25% = 0.25 percent off

$31.50 = (1 - 0.25)x subtract

$31.50 = 0.75x divide both sides by 0.75

`(31.50)/(0.75)=(0.75x)/(0.75)`

42