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1. |
Q: A and B can do a work in 12 days, B and C in 15 days, C and A in 20 days. If A, B and C work together, they will complete the work in |
A. | 5 days |
B. | $$ 7{5\over6}$$ |
C. | 10 days |
D. | $$ 15{2\over3}$$ |
Answer» D. $$ 15{2\over3}$$ | |