A village having a population of 4000 requires 150 litres of water per head per day. Due to
lack of sources of water, they collect the water into a tank measuring 20 m x 15 m x 6 m
from a river using a long pipe.
( a ) Find the total amount of water required per day .
( b ) Find the volume of the water tank .
( c ) For how many days will the water of this tank last ?
( d ) What message is conveyed by the people of village ?
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Answer:
Population of village = 4000 and quantity of water required per day = 150 litres. Quantity of water required by the village per day = ( 4000 × 150) litres = 4000×150 ÷ 1000 m³ = 600 m³. The no. of days for which the water will last = 1800÷600 = 3 days
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