Mental Math for Pilots Practice Test

Session length

1 / 20

Every 15 minutes equals how many hours?

0.15 hour

0.25 hour

Dividing by 60 converts minutes to hours, since there are 60 minutes in an hour. Fifteen minutes is one quarter of an hour, and one quarter of 60 is 15, so 15/60 = 0.25. Therefore, fifteen minutes equals 0.25 hour. For context, 30 minutes is 0.5 hour, 45 minutes is 0.75 hour, and 9 minutes would be 0.15 hour, which helps see how the fractions map to minutes.

0.5 hour

0.75 hour

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