http://img18.imageshack.us/img18/371...1b49bf055e.pnghttp://img222.imageshack.us/img222/1...5e2128f035.png

I received these two equations and my goal is to find variable P

It should be done by dividing two equation together.

the problem is that I'm stuck I don't how to start it.

final result : 0.3