question_answer

If the simple interest on a certain sum of money is one - ninth of the principal and rate of interest is equal to the time for which interest is found. Find the rate of interest on that sum of money.

A)  \[10%\]            

B)  \[\frac{10}{3}%\]

C)  \[5.5%\]                       

D)  \[7.25%\]

E)  None of these