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1. |
A and B together can do a piece of work in 8 days, B and C together in 10 days, while C and A together in 6 days, if they all work together the work will be completed in ? |
A. | ${\text{3}}\frac{3}{4}\,{\text{days}}$$ |
B. | ${\text{3}}\frac{3}{7}\,{\text{days}}$$ |
C. | ${\text{5}}\frac{5}{{47}}\,{\text{days}}$$ |
D. | ${\text{4}}\frac{4}{9}\,{\text{days}}$$ |
Answer» D. ${\text{4}}\frac{4}{9}\,{\text{days}}$$ | |