Instructions
Calculate hours in tenths using the knowledge that there are 60 minutes in an hour so one tenth of an hour would be 60 / 10 = 6 minutes.
Divide the number of minutes by 6. For instance, 24 minutes divided by 6 equals 4, which you convert to tenths by moving the decimal one place to the left. So 24 minutes is 0.4 of an hour.
Another method is to simply divide the minutes by 60. For instance, 17 minutes divided by 60 equals 0.2833, which you would round to 0.3 of an hour.