SOLUTION: one watering system needs about 3 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 9 minutes. How
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-> SOLUTION: one watering system needs about 3 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 9 minutes. How
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Question 458138: one watering system needs about 3 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 9 minutes. How long does it take each system to do the job alone? Answer by richwmiller(17219) (Show Source):
