Question

A shop has a sale of 25% off all items in stock.

If the original price of a dress is £20 what would be its sale price?

Answer 1

S.P:25x/100

0.25x=20

x=20/0.25

x=80

Answer 2

25% off means the new price of the item is 75% of the originl price ( 100% - 25% = 75%)

Multiply the original price by 75%:

20 x 0.75 = 15

The sale price is £15