A certain sum of money doubles itself in 12 years in how much many years will it trible itself at the same rate?  Options:
A) 20 years  B) 76 years  C) 24 years  D) 44 years  E) 11 years
100 ---- 100 --- 12   100 --- 12   --------------------   300 ---- 24 years   Answer: 24 years
<result>C</result>
A certain sum of money doubles itself in 12 years in how much many years will it trible itself at the same rate?