4 hours 15 minutes = what time 15 minutes = 0.15 * 60 = 9 how to calculate 4 hours
4 hours 15 minutes
15 minutes = 15 / 60 hours = 1 / 4 hours = 0.25 hours
4 hours = 4 / 1 hour
So, 4 + 1 / 4 = 17 / 4 hours
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