2e3t = 400 |:2
e3t = 200
lne2t =ln200
2tlne=ln200 lne=1
2t =ln200 |:2
t=ln200/2
t=2,649158683...
Omi: A mistake in the second step: ln e^2t = ln 200 <--- 2t should be changed to 3t. A typo.
+12530 
