A) 25 days
B) \[28\frac{4}{5}\] days
C) 20 days
D) 32 days
Correct Answer: B
Solution :
Let the one day work of man and woman are \[\frac{4}{x}\] and \[\frac{5}{x}\] respectively. Then, \[16\times \frac{4}{5}+16\times \frac{5}{x}=1\Rightarrow \frac{64+80}{x}=1\] \[x=144\] So, one day work of woman \[=\frac{5}{144}\] \[\therefore \] Work done by woman alone \[=\frac{144}{5}=\,\,\underline{\mathbf{28}\frac{\mathbf{4}}{\mathbf{5}}\,\mathbf{days}}\]You need to login to perform this action.
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