John buys a box of 40 light bulbs. He uses 16 of them and then gives half of what is left to a friend. How many does he have left?
Thoughts? Step-by-step reasoning:
User
He had 40 - 16 = 24 left after using some. Then after giving some away he is left with 24 / 2 = 12.
Thus, the answer is 12.
Assistant