Given the following reasoning and answer, what was the question? Harold shared 100 - 20 = 80 marbles with his friends. Therefore, his 5 friends got 80 / 5 = 16 marbles each.
 The answer: 16
The question Harold had 100 marbles. He kept 20 marbles and shared the rest evenly among his 5 friends. How many marbles did each friend get?