Asked by Nerd101
Runner runs 8 miles at 5 miles per hour, then another 2 miles at 7 miles per hour, find average speed.
Answers
Answered by
Reiny
Average speed = total distance/total time
time for first leg = 8/5 hrs
time for 2nd leg = 2/7 hours
total time = 8/5 + 2/7 or 66/35
avg speed = 10/(66/35) = 10(35/66) = 5.3 mph
time for first leg = 8/5 hrs
time for 2nd leg = 2/7 hours
total time = 8/5 + 2/7 or 66/35
avg speed = 10/(66/35) = 10(35/66) = 5.3 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.