SOLUTION: A pump can fill a swimming pool in 6 hours. Another pump can fill it in 9 hours. The first pump breaks down after working for 4.5 hours.
How many hours it will take does the seco
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-> SOLUTION: A pump can fill a swimming pool in 6 hours. Another pump can fill it in 9 hours. The first pump breaks down after working for 4.5 hours.
How many hours it will take does the seco
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Question 1057004: A pump can fill a swimming pool in 6 hours. Another pump can fill it in 9 hours. The first pump breaks down after working for 4.5 hours.
How many hours it will take does the second pump to finish the job? Answer by ikleyn(52798) (Show Source):
You can put this solution on YOUR website! .
A pump can fill a swimming pool in 6 hours. Another pump can fill it in 9 hours. The first pump breaks down
after working for 4.5 hours. How many hours it will take does the second pump to finish the job?
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In 4.5 hours the first pump filled = of the pool volume.
Hence, of the volume remained unfilled.
If the second pump can fill the entire pool in 9 hours,
it will fill the remaining of the volume in 4 times faster.
So, it will take hours = hours = 2 hours and 15 minutes for the second pump to finish the job.
