A village, having a population of 4000, requires 150 litres of water per head per day. It has a tank measuring 20 m × 15 m × 6 m. For how many days will the water of this tank last?
Water requirement of 1 person per day litres
Water requirement of 4000 people per day litres
1000 litres =1
Therefore, 1 litre
600000 litres (1)
It means that 4000 people of village have 600 of water consumption in one day.
Length of cuboidal tank m
Breadth of cuboidal tank m
Height of cuboidal tank m
Volume of cuboidal tank (2)
Dividing (2) by (1), we get
Number of days water will last days