SOLUTION: One drain pipe can empty a swimming pool in 6 h another pipe takes 3 h if both pipes are used at the same time to drain the pool what part of the job is completed in 2 h? in x h?

Question 579689: One drain pipe can empty a swimming pool in 6 h another pipe takes 3 h if both pipes are used at the same time to drain the pool what part of the job is completed in 2 h? in x h?
Answer by mananth(16949) (Show Source): You can put this solution on YOUR website!
Emptying the pool is one job
Faucet I 6 hours
It does 1/ 6 of the job in 1 hour
Faucet II 3 hours
It does 1/ 3 of thejob in 1 hour
Together they will do 1/ 6 + 1/ 3
Together they will do 1/ 2 of the job in one hour
So in 2 hours they will complete emptying the pool
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