If Re.1 amounts to Rs.9 over a period of 20 years. What is the rate of simple interest?
Options.
A) 80%
B) 30%
C) 90%
D) 40%
E) 42%
8 = (1*20*R)/100   R = 40%   Answer:40%
<result>D</result>
If Re.1 amounts to Rs.9 over a period of 20 years. What is the rate of simple interest?