Question

A village having a population of 4000 requires 150 liters 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?

Answer 1

Given,

Population of village = 4000

Requirement of water per head per day = 150 liter

Dimension of tank = 20m × 15m × 6m 

Let the water in tank last for x days ..

= x\(\times\) 4000\(\times\)150

 = 20\(\times\)15\(\times\)6\(\times\)1000

= x = \(\cfrac{20\times15\times6\times1000}{4000\times150}\)

 = 3 days