SOLUTION: A group of 3 workers need 20 days to do a certain job. How long would it take a group of 4 workers to do the same job, if each worker performs at the same rate?

Question 976111: A group of 3 workers need 20 days to do a certain job. How long would it take a group of 4 workers to do the same job, if each worker performs at the same rate?
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
RT=J to relate rate, time, job.

r, rate for one worker

Let t be the time for the group of four workers to do the same job.

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