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A piec of work can be done by 12 men in 24 days. After 4days. They started the work and then 6 more men joined them. How many days will they all take to complete the remaining work ?A. `12(1)/(3)`B. `13(1)/(3)`C. `11(2)/(3)`D. `13(2)/(3)` |
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Answer» Correct Answer - B (i) The work of 12 men in 4 days. `=(1)/(6)` (ii) After four days, 12 men can do remaining work in (24-4) days. `rArrM_(1)=12 and D_(1)=20` (iii) `M_(2)=(12+6)`, find `D_(2)` by using `M_(1)D_(1)=M_(2)D_(2)` . |
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