We are asked to determine the speed of a person. The average speed is defined as the distance over time. Therefore, the speed is:
[tex]v=\frac{d}{t}[/tex]Where "d" is the distance and "t" is time. Replacing the values:
[tex]v=\frac{35miles+17miles}{1hour}[/tex]Solving the operations:
[tex]v=52mph[/tex]Therefore, the speed is 52 miles per hour.