Respuesta :

5/2= 2 1/2 miles 2 1/2 mi x 4= 10 MPH
iGreen
Divide the two numbers.

5/2 / 1/4

Flip the 2nd fraction and multiply:

5/2 * 4/1

20/2

10

So the marathon runner travels at a unit rate of 10 MPH.