SOLUTION: A father can do a job in 3 days,and his son can do the same job for 5 days.How long will it take them to finish the job if they work together?
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Question 1095127: A father can do a job in 3 days,and his son can do the same job for 5 days.How long will it take them to finish the job if they work together?
Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
, unit of job per days
-
days for 1 job
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