Question 1183126


{{{200(1.22)^t=13960}}}


{{{(1.22)^t=13960/200}}}


{{{(1.22)^t=349/5}}}............take log of both sides 


{{{log((1.22)^t)=log((349/5))}}}


{{{t*log((1.22))=log((349/5))}}}


{{{t=(log((349))-log((5)))/log((1.22))}}}


{{{t=4.2456340097683265/0.19885085874516517}}}


{{{t=21.351}}}