Question

A book costs $25. It goes on sale for $19. What is the percent of decrease?

Answer 1

31.5789%

Explanation:

Answer 2

24%

Explanation:

If you use the "is over of" form.

"19 is what percent of 25"

You'd set it up like this:

`(19)/(25)`=
`(x)/(100)`

Then cross multiply:

19 times 100 = 1900

25 times x = 25x

Divide 25 into 1900 and get 76.

That is the percent (%) of what 19 is of 25.

BUT we want the space in between the numbers.

To get that, we subtract 100 - 76.

(100 is the whole 100%)

This gives you 24%