Sagot :
Answer:4/4 of the apple
Step-by-step explanation: Ben ate 3/4 of the apple and Irene ate 1/4 parts of the apple what is 1 + 3 =4 and there are 4 part of the apple so 4 is how much they ate and 4 is how much there is to eat so it would be 4/4
(sorry if this does'nt help)