SOLUTION: One watering system needs about three times as long to complete a job as another watering system. when both systems operate at the same time the job can be completed in nine minute

Question 940282: One watering system needs about three times as long to complete a job as another watering system. when both systems operate at the same time the job can be completed in nine minutes. how long does it take each system to do the job alone?
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
1/x + 1/(3x) = 1/9
4/(3x) = 1/9
x = 12

The first watering system can complete the job in 12 minutes and the second watering system can complete the job in 36 minutes.
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