Solve Circuit Problem: Find Battery Resistance

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Homework Statement



I'm having problems solving for the resistance of the battery see the picture

http://img202.imageshack.us/img202/9831/capturehj.jpg"

Homework Equations



V=IR

The Attempt at a Solution



see the picture click the link
 
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GreenPrint said:

Homework Statement



I'm having problems solving for the resistance of the battery see the picture

The sum of the current through R1...R4 is 6A, and not 5A, so your answers for
The current through R2 and the resistance of R2 must be wrong.