SOLUTION: one pipe can fill the pool in 6 hours.another pipe can fill the pool in 8 hours .if both pipes are open,how long will it take the pool to be filled?

Question 421865: one pipe can fill the pool in 6 hours.another pipe can fill the pool in 8 hours .if both pipes are open,how long will it take the pool to be filled?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Filling the tank is one job
One pipe fills in 6 hours
It does 1/ 6 of the job in 1 hours
other pipe 8 hours
It does 1/ 8 of thejob in 1 hours

Together they will do 1/6+ 1/8 of the job in 1 hour
Together they will do 7/24 of the job in one hour
So they will take 24/7 hours
OR 3.43 hours

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