# SOLUTION: Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank

Algebra ->  Algebra  -> Proportions -> SOLUTION: Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tank      Log On

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 Click here to see ALL problems on Proportions Question 489598: Pipe A can fill in 20 minutes and Pipe B in 30 mins and Pipe C can empty the same in 40 mins.If all of them work together, find the time taken to fill the tankAnswer by mananth(12270)   (Show Source): You can put this solution on YOUR website!Emptying the pool is one job 1 job Pipe I 20 minutes She does 1/20 job in 1 hour Pipe II 30 minutes 1/12 He does 1/30 of thejob in 1 hour Pipe III 40 minutes It does 1/40 of the job in 1 hour Together they will do 1/20 + 1/30 + 1/40 Together they will do 9/83 of the job in one minute 0.11 So they will take 9 2/9 minutes So they will take 9.23 minutes