Hello everyone, I'm quite new to Electrical Engineering. My background is mostly in computer science and i'm having issues figuring out how to setup the correct equations for series-parallel circuits. This is my problem. I've attempted to get the correct equations from this but always come out with two unknowns. I know that RT1 (total resistance within the two resistors in parallel at the top of the circuit) will be (47)(R2)/(47+R2), I also know that we have 220V coming from the source and there must be a voltage drop across each resistor. I know the voltage drop across the resistors in parallel are going to be equivalent. So i'm guessing V1 = V2 = Vs-V3? Also, there is a 1A current flowing through R2 (the resistance of R2 is what i'm trying to determine). I fell like I would be pretty quick to pick up on this problem if I could just be pointed in the right direction. Thanks in advance.