2. How many minutes are there in $\frac{1}{12}$ of a day?
A 240
B 120
C 60
D 30
E 15
Solution
B There are 24 hours in a day. So in $\frac{1}{12}$ of a day the number of hours equals $\frac{1}{12} \times 24=2$. In 1 hour there are 60 minutes. Hence the number of minutes in 2 hours is $2 \times 60=120$. So there are 120 minutes in $\frac{1}{12}$ of a day.