Sandy invested a certain sum of money at 8% p.a. simple interest for 'n' years. At the end of 'n' years, Sandy got back 2 times the original investment. What is the value of n?
Choose the correct choice from the following options
A) 12.5	B) 18.5	C) 24.5	D) 30.5	E) 36.5
n* 0.08 * principal + principal = 2 * principal   n * 0.08 = 1   n = 12.5 years   The answer is 12.5.
<result>A</result>
Sandy invested a certain sum of money at 8% p.a. simple interest for 'n' years. At the end of 'n' years, Sandy got back 2 times the original investment. What is the value of n?