Move the different colored marbles into the bag.
John is a marble collector. Most of the time he remembers to count all his marbles, but today he forgot to count how many green ones he has. If John puts 4 blue marbles, 2 purple marbles, 1 red marble, 5 yellow marbles and an unknown amount of green marbles in his collector pouch that can hold up to 15 marbles. Move the different colored marbles into the bag.