A sum of money becomes triple itself in 4 years at simple interest. How many years will it become six times at the same rate? Options:  A) 11 years  B) 10 years  C) 12 years  D) 14 years  E) 16 years
100 ---- 200 ---- 4   200 ---- 4   100 ---- 2   ------------------   600 ---- 10 years   ANSWER:10 years
<result>B</result>
A sum of money becomes triple itself in 4 years at simple interest. How many years will it become six times at the same rate?