A certain sum triples in 3 years under compound interest at a certain rate of interest. in how many years would the sum become 9 times itself at the same rate under compound interest.
3X = X (1+R/100)^3
9X = X(1+R/100)^T
9 = (1+R/100)^T
3 * 3 = (1+R/100)^T
(1+R/100)^3 * (1+R/100)^3 = (1+R/100)^T
T=6 years
What is the OA?
