A) 9
B) 6
C) 4
D) 3
Correct Answer: C
Solution :
[c] If y is number of days taken by a man alone to finish the work, we have \[\frac{1}{y}=\frac{1}{6}+\frac{1}{12}\] or \[\frac{1}{y}=\frac{3}{12}=\frac{1}{4}\] \[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\,y=4\,\,days\]You need to login to perform this action.
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