Sometimes measurements, money and times are given in decimal format, which is not always very convenient or easy to understand.
Sometimes, when using a calculator to find an answer, it is necessary to interpret your answer sensibly.
For example, if the answer is in money, then 4.7 means £4.70.
If the answer is in kilometers, then 12.09 means 12 km 90 m.
However, If the answer is in hours, the decimal part must be changed into minutes by multiplying it by 60.
Examples
8.15 hours is 8 hours and 0.15 hours
0.15 × 60 = 9 minutes
So 8.15 hours = 8 hours 9 minutes
5.24 hours is 5 hours and 0.24 hours
0.24 × 60 = 14.4 minutes.
So 5.24 hours is 5 hours 14.4 minutes