Question: Two resistors are connected in series. One resistor has a resistance of 1000 ohms, and the other resistor value is unknown. the circuit is connected

Two resistors are connected in series. One resistor has a resistance of 1000 ohms, and the other resistor value is unknown. the circuit is connected to a 30V power supply and there is a current of 25mA flowing in the circuit. if a 1500 ohms resistor is connected in parallel with the unknown resistor, how much current will flow in this branch?

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