The following pie chart shows the hourly distribution in a day (in degrees) of all the major activities of a student. Moreover, a day has 24 hours.
School corresponds to $$105^0$$ and homework corresponds to $$45^0$$
Difference = $$105^0$$ - $$45^0$$
=$$60^0$$
= $$\ \frac{\ 60}{360}\times\ 24$$
= 4 hrs
C is the correct answer.
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