Answer:
6.2 miles
Explanation:
total mileage = 28.8 miles
miles already ridden = 4 miles
mileage left = 28.8 - 4 = 24.8 miles
days to ride to cover the left mileage = 4
average number of miles she would have to ride each day =
mileage left / days to ride
= 24.8 / 4
= 6.2 miles