A: Work done by A in 1 day = 1/20 Work done by A with the help of B and C in 1 day = 1/20 Work done by A with the help of B and C in 1 day = 1/10 Work done by A with the help of B and C in 1 day = 1/15 Number of days in which A can do the work with the help of B and C in 1 day = 1/15 Days Number of days in which A can do the work without the help of B and C in 1 day = 20 Days The answer is (C).
Answer the following multiple choice question with options (a), (b), (c), (d), (e) by reasoning step-by-step.
Q: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? Answer Choices: A)12 B)13 C)15 D)16 E)18