Question

At a pizza shop, 6 slices of pizza and 2 drinks cost the same as 5 slices of pizza and 5 drinks. Each slice of pizza costs $4.50. Find the cost in dollars of each drink.

Answer 1

Each drink costs $1.50

Explanation:

Let d = the cost of a drink

6(4.50) + 2d = 5(4.5) + 5d Distribute the 6 and 5

27 + 2d = 22.50 + 5d Subtract 2d from both sides

27 + 2d - 2d = 22.50 + 5d - 2d

27 = 22.50 + 3d Subtract 22.50 from both sides

4.5 = 3d Divide both sides by 3

1.50 = d