question_answer

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

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 :

                   \[A+B=2\frac{2}{5}\] \[\therefore \]   So, work will complete in \[\underline{\mathbf{2}\frac{\mathbf{2}}{\mathbf{5}}}\] days