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Basil brush

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I'm having a few problems finding these values in this complex circuit. I've tried several different methods but still cannot find a step by step process of finding the right answers.

Can anyone help? It's been a while since I was at college!

Thank you in advance ?
 

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Find the current in C from the two currents given. Use Ohms law to find the voltage across A and hence across B. Use P=VI to find the last unknown voltage and hence the total, and again to find total dissipation.
 
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