Question

a,b and c can complete a piece of work in 4,20,and 60 days respectively. working together they can complete the 1/3th of the same work in how many days....,?​

Answer 1

Answer:

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So in 3 days, the work completed is 1/5th, so the entire work will be completed in 3/(1/5) = 15 days. Let us assume that the total work to be done is 60 units. Now if A completes the entire work in 20 days , his per day work will be 3 units,i.e (60/20)= 3.