- A 13
- B 16
- C 8
- D 5
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Answer:
C
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If the combined work rate of A, B, and C is 1/6 of the task per day,
the work rate of A and B is 1/8 of the task per day,
and the work rate of B and C is 1/12 of the task per day,
then the work rate of A and C is
(2 x 1/8 - 1/12) of the task per day,
which is equal to 1/8 of the task per day.
Therefore, A and C will take 8 days to complete the work together
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