A) 10 days
B) 11 days
C) 9 days
D) 12 days
Correct Answer: D
Solution :
| \[\because \] 3 men = 4 women |
| \[\therefore \]1 man \[=\frac{4}{3}\]women |
| \[\therefore \]7 men \[=\frac{7\times 4}{3}=\frac{28}{3}\]women |
| \[\therefore \]7 men + 5 women \[=\frac{28}{3}+5=\frac{28+15}{3}=\frac{43}{3}\]women |
| Now, \[{{M}_{1}}{{D}_{1}}={{M}_{2}}{{D}_{2}}\] |
| \[\Rightarrow \] \[4\times 43=\frac{43}{3}\times {{D}_{2}}\] |
| Where, \[{{D}_{2}}=\]number of days |
| \[\Rightarrow \] \[{{D}_{2}}=\frac{4\times 3\times 43}{43}=12\]days |
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