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## Homework Statement

## Homework Equations

P=V

^{2}/R

For maximum power transfer,

R

_{load}=R

_{Thevenin}

## The Attempt at a Solution

I know the efficiency is 50% during maximum power transfer. So when all the sources are acting simultaneously and ( at the same time) R=R

_{th}, maximum power will be dissipated in R.

I am not sure how to use the given values of power since both R and the source voltages are unknown. Plus, the voltage sources are connected across three different ports. This problem is from Circuit Theorems chapter, so I guess I need to use Maximum power transfer theorem along with Superposition theorem.

Any guidance is appreciated.