An intern can do a job in 15 days


Asked by admin @ in Math viewed by 353 People


an intern can do a job in 15 days. the manager and senior manager are busy with other priorities and thus take 25 and 40 days respectively to complete the task. how long will they take to finish the task if all of them work together

Answered by admin @




Working together their 1 day work=(1/15)+(1/25)+(1/40)=79/600
So they will finish the work in 600/79 or 7 47/79 days

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