Respuesta :

Distance = m miles, time spent = h hours

AVERAGE SPEED = DISTANCE/TIME

So his speed is m/h (D)

Answer: D. m/h

Step-by-step explanation: average speed = Distance ( miles) / Time ( hour)

Speed = Distance(m) / Time(h)

Speed = (m) / (h)

Speed= m / h

Speed = miles / hour.