Answer:
The total distance hiked altogether is;
[tex]5\frac{15}{16}\text{ miles}[/tex]Explanation:
Given that They hiked 4 3/8 miles to Green River and then walked another 1 9/16 miles down the riverbank.
The total distance they hike altogether is the sum of the two distance hiked;
[tex]\begin{gathered} d=4\frac{3}{8}+1\frac{9}{16} \\ d=4+1+\frac{3}{8}+\frac{9}{16} \\ d=5+\frac{6+9}{16} \\ d=5+\frac{15}{16} \\ d=5\frac{15}{16} \end{gathered}[/tex]Therefore, the total distance hiked altogether is;
[tex]5\frac{15}{16}\text{ miles}[/tex]