Carole and Canter agree to share the cost of an $18.00 pizza based on how much each ate. If Carole ate 2/3 the amount Canter ate, how much should each pay?

Answer 1

Canter's share is x and x and Carol's share is 2x/3
x + 2x/3 = 5x/3 = 1
x = 3/5
Canter pays 3/5 of $18. Carol pays the rest.