Marla ate 3 / 8 of a small pepperoni pizza and 2 / 8 of a small cheese pizza. Damien ate 3 / 12 of a small veggie pizza and 5/12 of a small mushroom pizza. Who ate a greater fraction of a whole pizza?

Marla ate 5/8 of a pizza; Damien ate 8/12 of a pizza. You can compare these numbers by expressing both using a denominator of 24.

Marla: 5*3 / (8*3) = 15/24

Damien: 8*2 / (12*2) = 16/24

Damien at the greater fraction of a pizza.