8) Jack is comparing the prices of two different brands of water bottles.
The first brand (A) costs $30 for a case of 24 bottles and the
second brand (B) costs $39.60 for a case of 36 bottles.
Which brand has the lower unit cost?
Unit cost = total cost / total number of items
So
30 / 24 = 5 / 4 = 1.25 (dollars)
39.60 / 36 = 1.10 (dollars)