Final answer:
To find the time she runs, divide the distance she covers by her speed.
Step-by-step explanation:
To find how many hours she runs, we can use the formula:
Time = Distance / Speed
Given that she runs at a speed of 7 miles per hour and covers a distance of 11.2 miles, we can substitute these values into the formula:
Time = 11.2 miles / 7 miles per hour = 1.6 hours
Therefore, she runs for 1.6 hours.