Question

A supermarket charges $2.50 for 8 cans of cat food . at the same rate how much would the supermarket charge for 28 cans of cat food

Answer 1

2.50 / 8 = 0.3125.
8 * 3 = 24
0.3125 * 4 = 1.25
2.50 * 3 = 7.5 + 1.25
= 8.5

8.5 should be final answer.