Convert 12.4 hours to hours and minutes.

Hence, 12.4 hours is equal to 12 hours and 24 minutes.

Step-by-step explanation:

We have to convert 12.4 hours to hours and minutes i.e. we need to find the equivalent form of this time as whole in hours and minutes.

We know that 12.4 hours means 12 hours+0.4 hours.

0.4 hours=4/10 hours

Also 1 hour= 60 minutes

This means that 4/10 hour could be converted as:

4/10 hour=(4/10)×60 minutes

Hence 0.4 hour= 24 minutes.

Hence on conversion we get that 12.4 hours is equal to 12 hours and 24 minutes.

a is the right answer