A pump empties a swimming pool in 40 minutes at the rate of 1400 L/min. If the rate of pumping is 2000 L/min, how long does it take to empty the swimming pool?
Answers
Given info : A pump empties a swimming pool in 40 min at the rate 1400 L/min.
To find : time taken to empty the tank if the rate of pumping is 2000 L/min.
Solution : water could be filled in the swimming pool = rate of pumping × time
= 1400L/min × 40 min
= 56000 L
Now, the rate of pumping is 2000 L/min.
so time taken to empty the swimming pool = volume of water could be filled in the swimming pool/rate of pumping
= 56000L/(2000L/min)
= 28 min
Therefore the swimming pool will be emptied in 28 min if the rate of pumping is 2000 L/min.
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