In what time a sum of money double itself at 7% per annum simple interest?\nOptions:\n(A) 33 1/8%\n(B) 33 1/3%\n(C) 14 2/7%\n(D) 33 4/3%\n(E) 73 1/3%
Let's think step by step below.
(C)
P = (P*7*R)/100\nR = 14 2/7%.

The answer: (C)