Question

Water is pouring 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

Volume of the reservoir $=108m^3=108\times 1000litres$
$(\because 1m^3=1000litres)$
The reservoir is filling at the rate of $60$ litres per minute.
$\therefore$ Required time $=\frac{108\times 1000}{60}min$.
$=\frac{108\times 1000}{60\times 60}hours=30hours$.