Here is a problem I found in Jo Boaler’s book “What’s math got to do with it?” She credits it to Ruth Parker:
A woman is on a diet and goes into a shop to buy some turkey slices. She buys 3 slices which together weigh 1/3 of a pound, but her diet says that she is only allowed to eat 1/4 of a pound. How much of the 3 slices she bought can she eat while staying true to her diet?