Answer and Explanation:
The cost of pizza production for Megan is 3 ÷ 5 root beer gallons.
And, Susan's pizza production potential cost is 1 ÷ 2 root beer gallons
Megan also gained an edge in pizza making as she only takes three hours, whereas Susan takes four hours on the other side.
And, susan's opportunity cost is lower than megan, which means that susan has the comparative advantage.
3 ÷ 5 root beer gallon may be better off.
And the cheaper price of 1 ÷ 2gallons of root beer could be better.