Respuesta :

15 miles and 3/4th hope this helps

Answer:

he can run 16 miles in 9 hours

Step-by-step explanation:

if he can run 5 1/4 miles in 3 hours the all you have to do is multiple 3 till you get 9 3×3=9 to now you multiple the 5 1/4 by 3 and get 16 or you can add 5 1/4 three times.