Use some thinking to answer the following question. If rupee one produces rupees nine over a period of 40 years, find the rate of simple interest?
Options:
(A) 22 1/7%
(B) 22 7/2%
(C) 29 1/2%
(D) 22 1/2%
(E) 22 1/3%
user
9 = (1*40*R)/100
R = 22 1/2 % So the final answer is (D).
assistant