Adam won 80 super bouncy balls playing the bean bag toss at his school's game night. Later, he gave four to each of his friends. He only has 4 remaining. How many friends does he have?
If he won 80 bouncy balls and at the end he is left with four we can subtract 4 from 80 to get 76 and then since we know that he gave 4 to each of his friends we can then divide 76 by 4 to get 19.
