Answer:
To get a discount price from full price you would multiply the full price by the discount (in this case .40) and to get the full price from discount price you would divide the discount price by 1- discount
So 24/.6= 40
Step-by-step explanation:
Linear equation should be the last one
Each Sheet = 9x8 = 72 stamps per sheet
72 x 12 = 864 stamps bought