Come up with a question and stream of consciousness reasoning that would justify this answer: 72

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The question is: Keegan is in school for 7.5 hours each day and he is taking 7 classes. He has history and chemistry classes for a combined total of 1.5 hours. How many minutes does Keegan spend in one of his other classes on average?
Stream of consciousness: He has 7 - 2 = 5 other classes. 7.5 hours - 1.5 hours = 6 hours. 6 hours = 360 minutes. 360 / 5 = 72 minutes. Keegan spends 72 minutes in one of his other classes.
