At a convention, 16 of 36 delegates arrived with pre-printed name badges. Half of the remaining delegates made their own, hand-written name badges. How many delegates were not wearing name badges? Think carefully first, then make a decision:
There were 36 - 16 = 20 without pre - printed name badges. Then 20 / 2 = 10 made hand - written badges. There were 20 - 10 = 10 with no name badge. So, the answer is 10.