SOLUTION: A park has two sprinklers that are used to fill a foutain. One sprinkler can fill the foutain in 3 hours, where as the other sprinkler can fill up the foutain in 6 hours. How long
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Question 185031: A park has two sprinklers that are used to fill a foutain. One sprinkler can fill the foutain in 3 hours, where as the other sprinkler can fill up the foutain in 6 hours. How long will it take to fill the foutain with both sprinklers operating?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
If A can do a job in x time periods, then A can do 
of the job in 1 time period. Likewise, if B can do the same job in y time periods, then B can do 
of the job in 1 time period.
So, working together, they can do
of the job in 1 time period.
Therefore, they can do the whole job in:
time periods.
John
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