Question

a village having a population of 4000, requires 150 litres water per head per day. it has a tank which is 20m long, 1.5m broad and 6m high. for how many days will the water of their tan last

Answer 1

Answer:

Here , l = 20 m , b = 15 m and h = 6 m

Therefore Capacity of the tank =ℓbhm3

=(20×15×6)m3=1800m3

Water requirement per person per day =150litres

Water required for 4000 person per day =(4000×150)ℓ

=(4000×1501000)m3=600m3

Number of days the water will last =Capacity of tank Total water required per day

=(1800600)=3

Thus, the water will last for 30 days.

Answer 2

4000×150 L=600000L

Given

length=20m

breadth=15m

height=6m

volume =L×B×H=20×15×6=1800 m3

1m3= 1000L

1800m3=1800 ×1000=1800000 L

1800000/600000=3days

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