Example : A man travels at 60 kmph on the journey
from A to B and returns at 100 kmph. Find his average
speed for the journey.
Answers
Answered by
2
Let the distance from "a "to "b" be x km
Then time of journey while going= distance/speed = (x/60)hrs.
Similarly time while returning = (x/100)hrs.
Total distance travelled=2x (going x km and returning x km)
Total time = x/60 + x/100
=(8x/300)hrs
Average speed
= total dist./total time
=2x/(8x/300)
=75km/hr
hope u understood
Similar questions