The simple interest on a certain sum of money is 25% of the principal and the rate per annum is equal to the number of years. Find the rate per cent.

The simple interest on a certain sum of money is 25% of the principal

1.	The simple interest on a certain sum of money is 25% of the principal and the rate per annum is equal to the number of years. Find the rate per cent.
A.	10%
B.	2%
C.	3%
D.	5%
Answer» E.