$(3)(5$ pts$)$ For the circuit shown: $($all values are $3$ sig figs$)$

$($i$)(1\mathrm{.}0$ pts$)$ If the current is $4\mathrm{.}00$ A $,$ what is the equivalent resistance of the circuit

$($ii$)(1\mathrm{.}0$ pts $)$ Find the value of the unknown resistor $\backslash (\backslash$mathbf$\{$R$\}\backslash ).$

$($iii$)(3\mathrm{.}0$ pts$)$ For each resistor: find the voltage and current