SOLUTION: pump a can fill an empty tank in 30 hours ,pump b can empty a filled tank in 36 hours.if both the pumps opperate simultaniously the tank can be filled in how many hours
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Question 803384: pump a can fill an empty tank in 30 hours ,pump b can empty a filled tank in 36 hours.if both the pumps opperate simultaniously the tank can be filled in how many hours
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Filling or emptying the pool we consider as 1 job
Pump A takes 30 hours to do 1 job
so it does 1/30 of the jb in 1 hour
Similarly pump B does 1/36 of the job in 1 hour
Actual jbo done
1/30 -/36 LCD = 180
(6-5)/180
=1/180 of the job is done in 1 hour
so it will take 180 hours to complete the job that is filling the pool
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