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- A, B and C can do a piece of work in 20, 30 and 60 days respectively.
Question 1:
A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every third day? A. 12 days
B. 15 days
Feedback A's 2 day's work =(1/20 x 2)= 1/10
(A + B + C)'s 1 day's work =(1/20+ 1/30 +1/60) = 6/60 =1/10
Work done in 3 days =(1/10+ 1/10)=1/5.
Now,1 /5 work is done in 3 days.
Whole work will be done in (3 x 5) = 15 days.
(A + B + C)'s 1 day's work =(1/20+ 1/30 +1/60) = 6/60 =1/10
Work done in 3 days =(1/10+ 1/10)=1/5.
Now,1 /5 work is done in 3 days.
Whole work will be done in (3 x 5) = 15 days.
C. 16 days
D. 18 days
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