Question

for a sale, a store decrease its prices on all items by 25%. An item that cost $120-0.25 (120). what is another expression for the sale price?

Answer 1

if it is 25% off, then ur actually paying 75%
75% of 120 = 0.75(120) = 90

and, of course the other way works as well...
120 - 0.25(120) = 120 - 30 = 90