Answer:
He delivered [tex]\sf {\frac{1}{2}[/tex] of the newspapers in the second hour.
Explanation:
[tex]\sf total \ newspapers: \ 1[/tex]
newspapers left to deliver after first hour:
[tex]\sf 1 - \frac{3}{8}[/tex]
[tex]\sf \frac{8}{8} - \frac{3}{8}[/tex]
[tex]\sf \frac{8-3}{8}[/tex]
[tex]\sf \frac{5}{8}[/tex]
in second hour:
[tex]\sf \frac{5}{8} * \frac{4}{5}[/tex]
[tex]\sf \frac{1}{2} * \frac{1}{1}[/tex]
[tex]\sf \frac{1}{2}[/tex]
