Write two conversion factors based on the relationship between hours and minutes...

There are 60 minutes in 1 hour; therefore, the two conversion factors are as follows:

1 hour/60 min
and
60 min/1 hour

To convert between hours and minutes, we need to establish a relationship between the two units.

Conversion factor 1:
1 hour = 60 minutes

This conversion factor tells us that there are 60 minutes in one hour. To convert from hours to minutes, multiply the number of hours by 60. For example, to convert 2 hours to minutes, multiply 2 by 60:
2 hours * 60 minutes/hour = 120 minutes

Conversion factor 2:
1 minute = 1/60 hour

This conversion factor tells us that there is 1/60th of an hour in one minute. To convert from minutes to hours, divide the number of minutes by 60. For example, to convert 90 minutes to hours, divide 90 by 60:
90 minutes / 60 minutes/hour = 1.5 hours