A) Less than 2 days
B) 2 days
C) Less than 1 day
D) More than 2 days
Correct Answer: C
Solution :
Work done by 2 women in 2 days = \[2\left( \frac{1}{5}+\frac{1}{7} \right)=\frac{24}{35}\] Remaining work = \[1-\frac{24}{35}=\frac{11}{35}\] \[\therefore \,\,\,\,\,\,\,\frac{12}{35}\] work is completed in 1 day work is completed in \[\frac{35}{12}\] days \[\frac{11}{35}\] work is completed in \[\frac{35}{12}\times \frac{11}{35}=\frac{11}{12}\] days i.e., less than 1 day
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