Important information about Find current through a resistor

Consider the circuit shown in the figure (Intro 1 figure) . The current through the 6.00ohms- resistor is 4.00 A, in the direction shown

Please see the attached file.

1.)What is the currents through the 25.00-ohms resistor?

2.)What is the current through the 20.00-ohms resistor?

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