1 hour and 20 minutes is 1.33333 hours.
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To convert 1 hour and 20 minutes into decimal form, you first divide the minutes by 60 to convert them into decimal form. In this case, 20 minutes divided by 60 equals 0.33. Then, you add this decimal value to the whole number of hours, which is 1. Therefore, 1 hour and 20 minutes in decimal form is 1.33 hours.
1 hour + 75 minutes = 2 hours 15 minutes... That's 2.25 hours as a decimal.
There are 20 minutes in a 1/3 of an hour
It is: 1/12 of an hour or 0.08'3' recurring '3' as a decimal
1 hour = 60 minutes 0.4 of an hour = 0.4 x 1 hour = 0.4 x 60 minutes = 24 minutes.