<PRE><B>Question 129671</B>
Two teams of workers have to do a job in 6 days.After that the first team worked 5 days , the second team joins the first one and the two teams worked 4 more days to comlete the job.In how many days each team will finish the work if they work all alone ? 
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Two-team DATA:
Time = 6 days/job ; Rate = 1/6  job/day
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1st Team DATA:
Let Time = x days/job ; Rate = 1/x job/day
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2nd Team DATA:
Let Time = y days/job; Rate = 1/y job/day
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EQUATION:
5(1/x) + 4(1/x + 1/y) = 1
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Cheers,
Stan H.

Let time for 1st team to do the joarate of </PRE>