Student: In what time a sum of money double itself at 3% per annum simple interest?
Options:
(A) 33 1/8%
(B) 33 1/3%
(C) 83 1/3%
(D) 33 4/3%
(E) 73 1/3%.
Another student: Let's say, hmmm...

P = (P*3*R)/100
R = 33 1/3% Final answer: (B).