Answer
Jeff could place three $300~\Omega$ resistors in the circuit in parallel.
Work Step by Step
Jeff could place three $300~\Omega$ resistors in the circuit in parallel.
We can find the equivalent resistance $R$:
$\frac{1}{R} = \frac{1}{300}+ \frac{1}{300}+ \frac{1}{300} = \frac{1}{100}$
Then, $R = 100~\Omega$.
