A train travels 20 km at a uniform Speed of 60 km / hr
and the next 20km at a uniform speed of 80km/hr .Calculate it's average speed.
Answers
Answered by
2
Answer:
Answered 1 year, 1 month ago
Time taken to travel 20 km at 60km/hr, t1=20/60=0.33hr
time taken to travel nxt 20 km at 80km/hr, t2=20/80=0.25hr
total distance=40 km
total time=0.58 hr
avg speed=total distance travelled / total time taken=40/0.58=68.96km/hr
Similar questions