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) About Me  (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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