Question

A store sells 10-ounce bottles of apple juice for $0.40 each and 16-ounce bottles for $0.56 each. How much money can you save by buying 80 ounces of juice in 16-ounce bottles rather than in 10-ounce bottles?
You can save $ by buying 16-ounce bottles instead of 10-ounce bottles.

Answer 1

You want to buy 80 ounces of juice.
1- If you decide to buy the 10-ounce bottles:
Number of bottles needed = 80/10 = 8 bottles
each bottle costs $0.4
total cost = 0.4*8 = $3.2

2- If you decide to buy the 16-ounce bottles:
Number of bottles needed = 80/16 = 5 bottles
each bottle costs $0.56
total cost = 0.56*5 =$2.8

Therefore, if you go for the 16-ounce bottles instead of the 10-ounce bottles, you will save:
3.2-2.8 = $0.4