I need some help with this.

[tex]I = \frac{V}{R} \\ [/tex]
Thus :
[tex]I = \frac{160}{2} \\ [/tex]
[tex]I = 80 \: \: A[/tex]
So :
[tex]V = 160[/tex]
[tex]I = 80[/tex]
[tex]R = 2[/tex]