Question

a train cover the first 50km of its journy in 30 min the, next 20km in another 10 min and last 80 in 20 min . calculate the average speed of the train.​

Answer 1

Answer:

total distance = 50+20+80=100km = 100000m

total time= 30+10+20=60min=3600secs

average speed of the train =total distance/total time

                                            =100000/3600 =27.77m/s

hope this is correct & helps

Answer 2

Answer:

150 kmph

Explanation:

Total distance = 50 + 20 + 80 = 150 kmph

Total time taken = 30 + 10 +20 = 1 hr

Speed = Distance/Time = 150/ 1 hour

= 150 kmph