Question

Question was provided via image upload.

Explanation:

Step1: Find Salis Trail length

Oak Trail length: $1\frac{5}{8}$ miles. Salis Trail is $1\frac{1}{2}$ miles longer.
First, convert mixed numbers to improper fractions:
$1\frac{5}{8} = \frac{13}{8}$, $1\frac{1}{2} = \frac{4}{4} = \frac{8}{8}$? No, correct conversion: $1\frac{1}{2} = \frac{3}{2} = \frac{12}{8}$
Salis Trail length: $\frac{13}{8} + \frac{12}{8} = \frac{25}{8} = 3\frac{1}{8}$ miles

Step2: Calculate total hiking distance

Add Oak and Salis Trail lengths:
$\frac{13}{8} + \frac{25}{8} = \frac{38}{8} = \frac{19}{4} = 4\frac{3}{4}$ miles

Answer:

a. $4\frac{3}{4}$