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I am working on problem 531 and I personally do not agree with the NCEES answer. Help! The question is asking for the Var losses in a transmission line during the transfer. I used the equations I found to calculate the active power transmitted, done to simply verify that the system did in fact 5,000 MW from System A to System B, using the equation ONE below. Next I calculated the var losses using equation TWO below. Based on the equation to find vars transmitted from A to B I calculate Yet NCEES says the answer is (D) 10,000 MVARS. So what am I missing? It does not seem like we find the vars transmitted from System A to System B as well as from System B to System A which would double. I say this because the problem states 5,000 MW transmitted from A to B. Any help is greatly appreciated. FYI-> I just found a similar equation to the one I used on the NERC website and I would hope they get it correct.