A sum of money becomes triple itself in 5 years at simple interest. How many years will it become six times at the same rate? Select
A) 12 1/2 years	B) 12 1/8 years	C) 17 1/2 years	D) 12 3/2 years	E) 15 1/2 years
100 ---- 200 ---- 5   200 ---- 5   100 ---- 2 1/2   ------------------   600 ---- 12 1/2 years   12 1/2 yearsnswer:12 1/2 years
<result>A</result>
A sum of money becomes triple itself in 5 years at simple interest. How many years will it become six times at the same rate?