How do virtual condition and MMC apply to this tolerance problem?

[theone]

Homework Statement

attached picture

Homework Equations

The Attempt at a Solution

I read about the virtual condition http://www.symphonytech.com/articles/GDT_Design.htm
but I don't really understand the approach used to solve the problem and was wondering if someone could explain the solution. where does the MMC come into the the solution?

 

[Nidum]

That article is not very helpful .

Your problem can be solved with simple arithmetic .

Just see if you can work out the maximum and minimum possible values of dimension C so that the clearance gap always stays within stated limits for any variation of the clevis dimension .