A and B together can complete a piece of work in 72 days, B and C together in 120 days and A and C together in 90 days. A, B and C together can complete the work in?
A. 35 days
B. 40 days
C. 48 days
D. 60 days
E. 50 days
সঠিক উত্তরঃ
D.
60 days
Explanation:
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