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DIRECTIONS: Choose the most appropriate answer:
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?
  • a)
    12 days
  • b)
    15 days
  • c)
    16 days
  • d)
    18 days
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
DIRECTIONS: Choose the most appropriate answer:Q. A, B and C can do a ...
Work done by A in 2 days 
Work done by A, B and C in one day 

Work done in three days (When A is assisted by B and C on every third day)

Hence required number of days = 5 × 3 = 15 days.
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DIRECTIONS: Choose the most appropriate answer: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?a)12 daysb)15 daysc)16 daysd)18 daysCorrect answer is option 'B'. Can you explain this answer?
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