Respuesta :

8.50×0.15= 1.275
1.28 is the amount you get off
8.50 is the original price
7.22 is amount paid
8.50 x .15 = 1.275 (discounted amount)

Subtract the discounted amount ($1.28 from $8.50)

8.50 - 1.28 = 7.22