Respuesta :

Cortes33
It's simple just divide the total Miles traveled by the total hours;

287 m ÷ 3.5 (it's 3.5 because 30 mins is half of an hour) 

[tex] \frac{287 miles}{3.5 hours} [/tex] = 82 miles per hour 

So your final answer would be 82 miles per hour  :)