Question

A and B can do a piece of work in 6 days and 4 days respectively.A started the work, worked at it for 2 days and then was joined by B. Find the total time taken to complete the work.​

Answer 1

Answer:

6,4 LCM = 12

efficiency = 2, 3 (A,B)

in first 2 days A did = 2*2 = 4 unit

left work = 8 unit

both do that now in = 8/5 = 1(1/3) days .

Total number of days to complete the work = 2+1+1/3 = 3(1/3) days ..

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