question_answer

Mary can finish an art work in 5 days and Martin can do the same work in 8 days. Find the time taken to finish the same work if both of them work together.

A)  \[8\,\,\frac{1}{2}\,\,days\]                   

B)  \[9\,\,\frac{2}{3}\,\,days\]

C)  \[4\,\,\frac{4}{9}\,\,days\]                   

D)  \[3\,\,\frac{1}{13}\,\,days\]

E)  None of these