A sum of money becomes triple itself in 5 years at simple interest. How many years will it become eight times at the same rate?
Answers
A) 12 Â½ years
B) 16 Â½ years
C) 18 Â½ years
D) 72 Â½ years
E) 12 Â½ years
100 ---- 200 ---- 5   200 ---- 5   100 ---- 2 1/2   ------------------   800 ---- 16 Â½ years   Answer:16 Â½ years
<result>B</result>
A sum of money becomes triple itself in 5 years at simple interest. How many years will it become eight times at the same rate?