Student: In what time a sum of money double itself at 8% per annum simple interest?\nOptions:\n(A) 33 1/8%\n(B) 33 1/3%\n(C) 33 7/3%\n(D) 32 1/3%\n(E) 12 1/2%.
Another student: Let's say, hmmm...

User
P = (P*8*R)/100\nR = 12 1/2% Final answer: (E).
Assistant