Answer:
3.6 hours
Step-by-step explanation:
I am assuming you mean 9 1/4 miles in exactly ONE hour. If not, just substitute in the correct number of hours.
you set up a ratio
9 1/4 m 1 hour
---------- = ----------
33 3/10 m x
cross multiply
9 1/4 * x = 33 3/10 * 1 = 33 3/10
solve for x
x=33 3/10 / 9 1/4
x=3.6