Question

Water is poured into a cuboidal reservoir at the rate of 60 litres per minute. If the volume of reservoir is $108m^3$. Find the number of hours it will take to fill the reservoir.

Answer 1

$\text{Volume of the reservoir}=108m^3=108\times 1000\text{litres}$

$(\because 1m^3=1000\text{litres)}$

The reservoir is filling at the rate of 60 litres per minute.

$\therefore \text{Required time}=\frac{108\times 1000}{60}\text{min.}$

$=\frac{108\times 1000}{60\times 60}\text{hours}=30\text{hours.}$