SOLUTION: If 800 litres of water is pumped out of a pool through a pipe of internal radius 4.5 cm, at a rate of 20 litres per minute, find the time it takes to empty the pool through this

Algebra ->  Rate-of-work-word-problems -> SOLUTION: If 800 litres of water is pumped out of a pool through a pipe of internal radius 4.5 cm, at a rate of 20 litres per minute, find the time it takes to empty the pool through this       Log On


   

Question 1017596: If 800 litres of water is pumped out of a pool through a pipe of internal radius 4.5 cm, at a rate of 20 litres per minute, find the time it takes to empty the pool through this pipe.
Give your answer in hours, correct to the nearest hour.

Found 2 solutions by Alan3354, Herdaysoji:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If 800 litres of water is pumped out of a pool through a pipe of internal radius 4.5 cm, at a rate of 20 litres per minute, find the time it takes to empty the pool through this pipe.
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800 liters/(20 liters/min) = 40 minutes

Answer by Herdaysoji(25) About Me  (Show Source):
You can put this solution on YOUR website!
If the pipe pumps at 20L/min
.'.800/20=40
i.e800L will pump out in 40 min
.'.40min=2/3hr