I'm having a problem with DC Series/Parallel Circuits. I have attachted two schematics named problem 1 and problem 2. Problem 1 asked what is the current flowing across R3 in this circuit? Problem 2 asked what is the power consumed by R2 in this circuit. I have looked and looked at these schematics I just can't figure out how they came up with the answers. Can anyone please help.

Problem 1

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Problem 2

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Thanks In Advance

aslaton