Question: find value for t where ca(t)=0.2 (very simple request, but my maple knowledge is limited)

Hey there!


this is the formula:

diff(ca(t), t) = -3.600000000*10^20*exp(-15098.13790/(340-20*ca(t)))*ca(t), ca(0) = 2

I can easily plot it by solving DE numerically, however I can't seem to find a way to determine what 't' is at ca(t)=0.2


thank you so much in advance!

Kind regards, 


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