Three teachers share a pizza. Craig eats 1 5 of the pizza, Krystal eats 1 4 of the pizza and Michael eats the rest. What fraction of the pizza does Michael eat?

Answer 1

1- 1/4 - 1/5 = 1-5/20 -4/20

= 1- 9/20 = 20/20 - 9/20

= 11/20

Michael ate 55% of the pizza. 11/20 = 55/100 = .55 = 55%