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?
Pick.
A) 12 1/2 years	B) 12 1/6 years	C) 12 7/2 years	D) 12 1/4 years	E) 22 1/2 years
100 ---- 200 ---- 5   200 ---- 5   100 ---- 2 1/2   ------------------   600 ---- 12 ½ 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?