SOLUTION: with the compound interest formula: A=amount, P=principle, r=annual interest rate, n=# of times it is compounded per year, and t=# of years so that: A=P(1+ r/n)^nt, find the len

Question 113754: with the compound interest formula:
A=amount, P=principle, r=annual interest rate, n=# of times it is compounded per year, and t=# of years so that: A=P(1+ r/n)^nt, find the length of time it takes for the investment to increase M fold (M=2 double, M=3 triple), for time in terms of M,r,and n
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

solve for t
divide both sides by P

take log of both sides

answer
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