Question

A gallon of milk in Oregon costs $2.50. The price of a gallon of milk in Hawaii is 3 times more than the price of a gallon of milk in Oregon. The price in Hawaii can be found by using the expression 3m, where m is the price of milk in Oregon. If Fernando bought a gallon of milk in Hawaii and gave the cashier a $20 bill how much change should he receive?

Answer 1

Explanation:

price of milk in Hawaii=

3m=3 x 2.5 =7.5

change=20-7.5

=12.5

Answer 2

$12.50

Explanation:

First, find the cost of a gallon of milk in Hawaii by multiplying 2.50 by 3:

2.5(3)

= 7.5

Then, subtract this from 20:

20 - 7.5

= 12.5

So, Fernando should receive $12.50 in change