At what rate percent of simple interest will a sum of money double itself in 33 years?
Choose the correct option.
A) 6.54 % B) 4.54 % C) 8 . 2 % D) 3.03 % E) 5.54 %

Rationale: "let sum = x . then , s . i . = x . rate = ( 100 * s . i . ) / ( p * t ) = ( 100 * x ) / ( x * 33 ) = 100 / 33 = 3.03 % answer : d"
Answer: D