Answers

2015-01-22T13:35:30+05:30

2 day's work of A = 1/20*2 = 1/10

1 day's work of A+B+C = 1/20+1/30+1/60 = 6/60 = 1/10

In 3 days, work done = 1/10+1/10 = 2/10 = 1/5

Now the work done in three days is 1/5

Hence, whole work will be done in 3*5 days = 15 days

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