SOLUTION: A children's inflatable pool takes 22 minutes to fill with an electrical pump. It takes 49 minutes to let the air out of the pool. If the pool's valve is accifentally left open,
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Question 366703: A children's inflatable pool takes 22 minutes to fill with an electrical pump. It takes 49 minutes to let the air out of the pool. If the pool's valve is accifentally left open, how long will it take to fill the pool? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! takes 22 minutes to fill
so it does 1/22 of the job in 1 minute
..
49 minutes to deflate
so it does 1/49 of the job in 1 minute.
..
effective filling in 1 minute will be
1/22-1/49
(49-22)/22*49
27/22*49
= 0.025 of the job is done in 1 minute when both are on
1/0.025
= 40 hours
...
m.ananth@hotmail.ca
