Answer :
[tex]\$16\frac{1}{5}[/tex]
1) Firstly, let's convert that mixed number into an improper fraction:
[tex]20\frac{1}{4}=\frac{4\times20+1}{4}=\frac{81}{4}[/tex]2) Now, let's find Marvin's hourly wage:
[tex]\frac{81}{4}\cdot\frac{4}{5}=\frac{81}{5}=16\frac{1}{5}[/tex]Note that to rewrite it as a Mixed Number