this is rather very simple algebra question.
#1) sam drives 20 miles at the rate of 60mph and then reduced the speed to 40mps at bumpy road for another 8 miles drive. What is the average speed of the entire driving?

Question

this is rather very simple algebra question.
#1) sam drives 20 miles at the rate of 60mph and then reduced the speed to 40mps at bumpy road for another 8 miles drive.  What is the average speed of the entire driving?

anonymous · Answer

First calculate the total time taken for the entire diving.
Total time taken = 20/60 + 8/40 = 8/15 hours

anonymous · Answer

Now, 
average speed = distance travelled / time taken =28/(8/15) =52.5mph

anonymous · Answer

Thank you so much!! I have got mixed up with something else here and went circling around. thanks for the help!1

anonymous · Answer

welcome