| A completes a piece of work in 4 days and B completes it in 6 days. If both A and B work together, then the number of days required to complete the same work is [BSSC (CGL) 2015] |
A) \[3\frac{4}{5}\,days\]
B) \[2\frac{3}{5}\,days\]
C) \[2\frac{2}{5}\,days\]
D) \[3\frac{2}{5}\,days\]
Correct Answer: C
Solution :
| Total number of days required to complete the work |
| \[=\frac{4\times 6}{4+6}=\frac{24}{10}=\frac{12}{5}=2\frac{2}{5}\,\,days\] |
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