Answer:
Tia ran 1.775 miles more than George.
Step-by-step explanation:
Miles ran by Tia = 2 and 7/8 miles

Miles ran by George = 1 and 1/10 miles

More distance ran by Tia than George = Miles ran by Tia - Miles ran by George
More distance ran by Tia than George = 2.875 - 1.10 = 1.775 miles.
So, Tia ran 1.775 miles more than George.