Question

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1. To uayo
1) A, B and C can do a piece of work in 20, 30 and 60 days respectively. A started the work
and he was assented by B and C on every third day. Then how many days the work can be
completed?​

Answer 1

Answer:

Step-by-step explanation:Fraction of work done in one by A, B, and C is

1/20, 1/30 and 1/60

In first 2 days, fraction of work completed by A is

2/20

Third day, B and C are assisting A then fraction of work completed on 3rd day will be

1/20 + 1/30+ 1/60 = 6/60 i.e 1/10

So total fraction of work done after 3 days

2/20+1/10=4/20 I.e. 1/5

So complete work will be completed in 5 days