A 440V, 3phase system supplies a 20 KVA, 0.8 pf lagging balanced wye connected load and a 15KVA, unity pf balanced delta connected load. What is the total power factor of the system?

INSTRUCTIONS: I really need to understand this. Please follow and I'll give an upvote without any questions. Do not answer if you don't know, please I'm trying to study while working.   • If using calculator, please input at the solution. Example: "Just click at 'Mode 2 5" like that • Always write the complete formula including derivation of the fomula  • When writing a formula, please input the exact word terminology. Example: Ia = Van/Zan where Ia is a phase A line current  • Always put explanation at the computation.     TOPIC: Analysis of Balance Polyphase Systems    QUESTION: A phase voltage of 230V, 3 phase supply feds a balanced wye-connected load of 10+j5 ohms per phase. The real power of the load is _____ watts.

step by step solution and explain the process please no AI answer. handwritten very much appreciated

INSTRUCTIONS: I really need to understand this. Please follow and I'll give an upvote without any questions. Do not answer if you don't know, please I'm trying to study while working.   • If using calculator, please input at the solution. Example: "Just click at 'Mode 2 5" like that • Always write the complete formula including derivation of the fomula  • When writing a formula, please input the exact word terminology. Example: Ia = Van/Zan where Ia is a phase A line current  • Always put explanation at the computation.     TOPIC: Analysis of Balance Polyphase Systems    QUESTION: A 208V, 3 phase power system is connected through a three-phase transmission line to a Y-connected load. The transmission line has an impedance of 0.06+j0.12 ohms per phase, and the load has an impedance of 12+j9 ohms per phase. For this simple system, find the power factor of the system. (BEP 2015)