alleryA, B and C together finish in 4 days; A and B together need 6 days. C alone needs
A8 days
B12 days
C10 days
D24 days
Answer & Solution
Correct answer: B. 12 days
C's rate is 1/4 - 1/6 = 2/24 = 1/12 per day, so 12 days.
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