SOLUTION: 4 skilled workers can do a job in 5 days, 5 semi-skilled workers can do the same job in 6 days. How long does it take 1 semi-skilled and 2 skilled workers to do the job working tog

Question 1110376: 4 skilled workers can do a job in 5 days, 5 semi-skilled workers can do the same job in 6 days. How long does it take 1 semi-skilled and 2 skilled workers to do the job working together?

I think you do 5/4 and 5/6, and then you add 5/6+5/6+5/4. I'm not sure though.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
4 skilled workers rate, , ----rate for 1 skilled worker

5 semi-skilled workers, , ----rate for 1 semi-skilled worker

How long for 1 semi-skilled and 2 skilled workers working together?
Their collective work rate is

----------JOBS per DAYS

In DAYS per 1 JOB, this is days.
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