1. The problem statement, all variables and given/known data The question is as per my attachment 2. Relevant equations 3. The attempt at a solution I found the following help of the internet but do not know where to start any assistance would be appreciated: you don't need to be concerned about matched turns ratio. You can assume that the turns ratio is 1:1 and that the transformers are single-phase or that you have per-phase, wye data. Since the answer is to be given as a percentage, you can assume a convenient voltage like 1000 V. That reduces the problem to a relatively simple network of (0.09 + j0.18) in parallel with (0.09 + j0.23) and that parallel combination in series with (R + jX). With the assumed voltage, the power factor of the current in one branch, and the kva of the load supplied by that branch.