Question

A bookstore is having a sale in which you can get 4 notebooks for $7.00 and 10 folders for $2.50. How much will it cost Rico to buy 5 notebooks and 6 folders?

Answer 1

Find the unit rate :
4 notebooks for 7 bucks.......7/4 = 1.75 per notebook
10 folders for 2.50....2.50/10 = 0.25 per folder

so 5 notebooks = 5(1.75) = 8.75
6 folders = 6(0.25) = 1.50
for a total of : (8.75 + 1.50) = 10.25 <==