Question 1088115

Please help me solve this word problem:A sum of money at compound inerest amounts to thrice itself in 3 years. In how many years will it be 9 times itself? 
<pre>Assuming ANNUAL compounding, an amount will triple in 3 years, at an interest rate of 0.44224957, or 44.22%
Again, assuming ANNUAL compounding, and at an interest rate of 0.44224957, or 44.22%, an amount will be 9 TIMES ITSELF in: {{{highlight_green(matrix(1,2, 6, years))}}}