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In how many days 10 women can finish the work I. 10 men finish the work in 6 days. II. 10 women and 10 men finish the work in `3(3)/(7)` days. III. If 10 men work 3 days and after that 10 women are deployed to work for men, the rest work is finighed in 4 days.A. I and IIB. Any two of threeC. I and IIID. II and III |
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Answer» Correct Answer - B From I and II, 10 women can finish the work in 1 day `=7/24-1/6=(7-4)/(24)=1/8` `therefore` 10 women can finish the work in 8 days. From II and III, Let 10 men and finish the work in x days and 10 woment can finigh the same wirk in y days. Hence, `1/x+1/y=7/24" "...(i)` and from III-II, `3/x+4/y=1" "...(ii)` from (i) & (ii) `y=8` days Again from I and II `3/6+4/y=1 impliesy=8` days |
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