1. The problem statement, all variables and given/known data We are given currents ia and ib, 4A and 2A respectively. We must find ig and vg (tough). I understand how to do b and d easily once I get the unknowns (ig and vg), that's what I need help with. Picture > http://img210.imageshack.us/img210/3667/1000943d.jpg [Broken] 3. The attempt at a solution I understand we need to find what the total resistance is, but I don't know how to simplify. My best bet is to use the formula to transform a resistors in shape of a T into a triangle. But would that work given a current inside the T? and not a resistor? Any ideas where to start?