Help with complex circuit calculations

[Basil brush]

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 ?

 

[Lucien Nunes]

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.

 

[telectrix]

your starter for 10:

if B is 5A, then current through A and C is 5A (total current being 10A).