## A,B and C can do a piece work in 10 12 and 15 days respectively .They work for some days.A leaves before 5 days before the completion of the

Question

A,B and C can do a piece work in 10 12 and 15 days respectively .They work for some days.A leaves before 5 days before the completion of the work and B leaves two days after A.how long does the whole work lastâ€‹

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Math
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2021-08-17T10:21:20+00:00
2021-08-17T10:21:20+00:00 1 Answer
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## Answers ( )

Step-by-step explanation:LCM of 10,12,15 is 60

Efficiency of A = 60/10= 6

Efficiency of B = 60/12= 5

Efficiency of C = 60/15= 4

In last 3 days only C works= 3*4= 12

Before 2 Days B+C worked =2*9= 18

Remaining by A+B+C =60-30=30

30/15=2 days

Total= 5-2=7 days