SOLUTION: if sam can do a certian job in 3 days while it takes fred 6 days to do the same job how long will it take them working together to complete the job?
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Question 415493: if sam can do a certian job in 3 days while it takes fred 6 days to do the same job how long will it take them working together to complete the job?
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
My calculator said it, I believe it, that settles it
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