Derek has $960 to buy his books for the semester. He spends half of that on his textbooks, and he spends a quarter of what is left on his school supplies. What is the amount of money Derek has left?
Please answer and provide answer explanation.
360
Amount spent on textbooks is 960 / 2 = 480 dollars.

Amount spent on school supplies is 480 / 4 = 120 dollars.

Amount Derek has left 960 - 480 - 120 = 360 dollars.

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So, the answer is 360