Brain teasers

[Tank]

If y=mx+c and in one case y=3x+4410 and in another y=20x+1135 what is the value of x to 3 significant figures when y and x are equal in both equations?


Why do I want so know? Don't read the spoiler until you've worked out the numbers!

[spoiler:5ar6h19c]The answer is 193 and this represents the days from now when my post count will exceed Whitney's if we both continue at our current posting rates of 3 and 20 posts per day respectively.
Here is a plotted image of the two lines showing there approximate crossing point.

[attachment=0:5ar6h19c]dates.JPG[/attachment:5ar6h19c][/spoiler:5ar6h19c]