Find the discount or intrest to the nearest cent.

$500 television, 15% off

Discount = (500)(.15) = $75.00 off

Can i do it like this

20% / 100 * $25 /125=$100

where are those numbers coming from?

Formula is: % / 100 = part /whole

yes I know, but where is 20% coming from? where is $25 coming from? where is 125 coming from?

Please provide context

Well, anyway, the Physics was easy :)

Ans 15 /100 x 500 =75 . 500-75 =$425. The discount is $425