Asked by Anonymous
you go up a hill at 10 miles per hour and down the hill at 30 miles per hour what is the average speed and it's not 20 miles per hour
Answers
Answered by
Reiny
time to go up hill = d/10
time to go down = d/30
total time = d/10 + d/30 = 4d/30
avg speed = total distance / total time
= 2d/(4d/30)
= 2d(30/4d)
= 60/4 = 15 mph
time to go down = d/30
total time = d/10 + d/30 = 4d/30
avg speed = total distance / total time
= 2d/(4d/30)
= 2d(30/4d)
= 60/4 = 15 mph
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.