1. The problem statement, all variables and given/known data http://imgur.com/vUoRrhO [Note: Image copy inserted by moderator] 2. Relevant equations Req for parallel is 1/Req=1/R+1/R... 3. The attempt at a solution I have never seen a circuit like this and I'm not sure as to how I would go about calculating it since there is a resistor inside of the parallel section. All those resistors are 10 ohms.