If a pair of jeans cost 45 dollars before the sale and the sale is taking 9 dollars off of the original price what was the percent taken off?

Question

asked Apr 20, 2020 161k views

2 Answers

Seyedraouf Modarresi · Answer 1 · 2020-04-25T15:09:39+0000

Answer:

20%

Explanation:

A pair of jeans cost $45 before the sale.

The sale is taking $9 off of the original price.

Then

$45 - 100%

$9 - x%

Write a proportion:

(45)/(9)=(100)/(x)

Cross multiply:

$45\cdot x=9\cdot 100\\ \\45x=900\\ \\x=(900)/(45)\\ \\x=20\%$