Use some thinking to answer the following question. Simple interest on a certain sum is 16 over 25 of the sum. Find the rate per cent and time, if both are equal.
Options:
(A) 8% and 8 years
(B) 6% and 6 years
(C) 10% and 10 years
(D) 12 % and 12 years
(E) None of these
1625P = PRR/100
R2 = 160025 R = 405 = 8%
Also, time = 8 years So the final answer is (A).