Question

En una tienda de electrodomésticos, un refrigerador costaba $8,900 y rebajaron su precio a $7,120 ?Cuál fué el porcentaje que le rebajaron?

Answer 1

`20\%`

Explanation:

The question in English is

In one appliance store, a refrigerator cost $8,900 and they lowered it to $7,120. What percentage did they lower?

we know that

$8,900 ------> represent the 100%

so

by proportion

`(100\%)/(\$8,900)=(x\%)/(\$7,120)\\ \\x=7,120*(100\%)/8,900\\ \\x=80\%`

therefore

the percentage is equal to

`100\%-80\%=20\%`