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 3 times the original investment. What is the value of n? Choose the correct choice from the following answers.
A) 20
B) 25
C) 30
D) 35
E) 40
n* 0.08 * principal + principal = 3 * principal   n * 0.08 = 2   n = 25 years   The answer is 25.
<result>B</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 3 times the original investment. What is the value of n?