MATHEMATICS questions

Question

Carol.Wynne bought a silver tray that originally cost $ 155 and was advertised at 70% off. WHAT WAS THE SALE PRICE OF THE TRAY ?

Answer 1

.3($155)= $46.50= sales price after 70% discount

155-.7(155)=(1-.7)155= .3(155)=46.5

70%=.70=.7

.7(155)=108.5

155-108.5=46.5