Question

A backpack normally costs $25 but it is on sale for $21. What percentage is the discount?

Answer 1

THAT WOULD BE 16% !!!

Answer 2

16%

Explanation:

use the formula:

`(n-0)/(0)=(-x)/(100)`

n=new price (21)

o=old price (25)

x=% (since its a discount the "x" will be negative)

so

`(21-25)/(25)=(-x)/(100)`

`(-4)/(25)=(-x)/(100)`

2) cross multiply:

-4(100)=-25x

-400=-25x

16=x

the percent discount is 16%

Hope this helps!