1. The problem statement, all variables and given/known data Use Kirchhoff's voltage and current laws to find the voltage V0 2. Relevant equations KVL: ƩV=0 KCL: iin=iout 3. The attempt at a solution http://s2.postimg.org/6b2013cbt/001.jpg [Broken] If you guys want the original circuit diagram, i'll post it. Note: The current flowing through i2 is -0.2mA. Forgot to put the minus sign.