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1. |
A and B can complete a piece of work in 12 and 18 days respectively. A begins to do the work and they work alternatively one at a time for one day each. The whole work will be completed in ? |
A. | ${\text{14}}\frac{1}{3}{\text{ days}}$$ |
B. | ${\text{15}}\frac{2}{3}{\text{ days}}$$ |
C. | ${\text{16}}\frac{1}{3}{\text{ days}}$$ |
D. | ${\text{18}}\frac{2}{3}{\text{ days}}$$ |
Answer» B. ${\text{15}}\frac{2}{3}{\text{ days}}$$ | |