Michelle had some leftover cans of silly string from her birthday party. She split them among Roger and 3 of his friends. Then Roger decided to give 2 of his cans to his brothers so that he now has 4 for himself. How many cans of silly string did Michelle have to start with?
Roger originally had 4 cans of silly string + 2 can he gave to his brothers = <T>add(4, 2)=6 cans.
Since his friends received the same amount as Roger did originally, 3 friends x 6 cans of silly string = <T>multiply(3, 6)=18 cans.
Michelle started with 6 cans that went to Roger + 18 cans that went to his friends = <T>add(6, 18)=24 cans of silly string.
