1) determine how many miles Jody hikes when she leaves from the 2 1/4 mile marker and arrives at the 4 3/8 mile marker, by subtraction:
4 3/8 - 2 2/8 = 2 1/8 miles.
2) determine how many miles she hikes, leaving the 4 3/8 mile marker and arriving at the 1 1/2 mile marker. Again, subtract:
4 3/8 - 1 4/8 = 3 11/8 - 1 4/8 = 2 7/8 miles.
Adding together 2 1/8 miles and 2 7/8 miles, we get 5 miles.
Did Jody hike more than 4 miles? You decide.