Respuesta :

mistycoraleen

Answer:

61 miles per hour

Step-by-step explanation:

because you need to divide 274.5 by 4.5 to get the average speed per hour.

Sarah06109

Answer:

61 miles per hour

Step-by-step explanation:

To find the average speed, divide the miles by the hours

miles/hours

274.5/4.5

61

So, the average speed is 61 miles per hour