The simple interest for 9 years on a principal is \(\frac{3}{5}\) of the principal. What is the rate of interest per annum?

The simple interest for 9 years on a principal is \(\frac{3}{5}\) of

1.	The simple interest for 9 years on a principal is \(\frac{3}{5}\) of the principal. What is the rate of interest per annum?
A.	6%
B.	20/3%
C.	\(5\frac{2}{3}\%\)
D.	4%
Answer» C. \(5\frac{2}{3}\%\)