A to B at a speed
A cor travelG
of 40 km/h
then returns using the
same road from B to A at a speed
of 60 km/h. What is average Speed?
Answers
Answered by
1
Answer:
50 km/h
Step-by-step explanation:
average speed= total distance/total time =100/2
50km/h
Answered by
1
Answer:
48 km/h
Step-by-step explanation:
Let the distance A to B be d, speed be s and time be t.
Average speed: s= d/t
------------------------------------
- Time spent one way is d/40
- Time spent on return is d/60
Average time is 2t against the distance of 2d as we are adding them up:
Total time is:
- 2t=d/40+d/60
- 2t=3d/120+2d/120
- 2t=5d/120
- 240t=5d
- d/t=240/5
- d/t=48
- s=48 km/hr average speed
Average speed was 48 km/h
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