Question 430427
(3500)*(1.08)^X=14000*(1.03)^X 
..
(1.08)^x/(1.03)^x=14000/3500=4
(1.08/1.03)^x=4
take logs of both sides
xlog(1.08/1.03)=log4
x(log1.08-log1.03)=log4
x=log4/(log1.08-log1.03)=29.2453..