If you walk for 1.5 hours at 3 mph, how fast should you run during the next 0.5 hours to have the average speed of 4 mph?

Respuesta :

you want an average rate of 4 mph over 2 hoursd=4*2   (1.5+0.5)d=8 miles8-4.5=3.5 miles to run in 0.5 hours3.5=R*0.5R=3.5/0.5=7 mph

Answer:

7 mph

Step-by-step explanation:

The answer is 7 miles per hour