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OpenStudy (anonymous):
One irrigation system needs about 3 times as long to complete a job as another irrigation system. When both systems operate at the same time, the job can be completed in 9 hours. How much time is required for the faster system to complete the job by itself?
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OpenStudy (anonymous):
OpenStudy (anonymous):
@realthugshorty2000
OpenStudy (anonymous):
here is solve on that link
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