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 5 times the original investment. What is the value of n?
Choices.
A) 30
B) 35
C) 40
D) 45
E) 50
n* 0.08 * principal + principal = 5 * principal   n * 0.08 = 4   n = 50 years   The answer is 50.
<result>E</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 5 times the original investment. What is the value of n?