group b ate more pizza because group a ate 1 whole pizza and b ate 1whole 2/6 and to find out how much c ate u do 1 whole plus 1 whole 2/6 which is 2 whole 2/6 and 4/6 is left. Group a ate: 1 whole pizza Group b ate: 1wholw 2/6. Group c ate: 4/6 and b ate the most