A simple circuit consists of a resistor that's connected to a battery. How much power is dissipated by the resistor?

A cicuit with a voltage source of 40V has a resistor and a resistor in series, followed by two resistors in parallel. After the parallel branches rejoin, there is a resistor before the circuit is closed at the voltage source.

What is the current supplied by the source?

What is the current delivered to the curcuit by the battery?