Deepak is 30% less efficient than Dharam and Dharam take 9 days less to complete the work alone than the time taken by Deepak to complete the same work alone. Find in how many days the same work will be completed, if Deepak and Dharam both starts working together?

Options

A. A)`13(14)/(17)`days
B. B)`11(8)/(17)`days
C. C)`14(5)/(17)`days
D. D)`12(6)/(17)`days

Answer

D