A) 5 days
B) 6 days
C) 9 days
D) 10 days
Correct Answer: B
Solution :
Work done by A and B in 2 days\[=\frac{1}{3}\times 2=\frac{2}{3}\] |
Remaining work \[=1-\frac{2}{3}=\frac{1}{3}\] |
Now,\[\frac{1}{3}\]work is done by A in 2 days |
\[\therefore \] Whole work will be done by A in \[2\times 3=6\] days |
\[\therefore \] B?s 1 day's work \[=\frac{1}{3}-\frac{1}{6}=\frac{2-1}{6}=\frac{1}{6}\] |
\[\therefore \] B alone can do the work in 6 days. |
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