Question

a train moves with the speed of 30 km/h in a first 15 minutes.then he moves 40km/h in another 15 minutes with a speed of 60km/h in a last 30 minutes. find the average speed of train for this journey​

Answer 1

Hope it helped you brother

Answer 2

distance = speed × time

1) distance = 30 × 0.25

= 7.5km

2) distance = 40 × 0.25

= 10km

3) distance = 60 × 0.5

= 30km

average speed = total distance / total time

average speed = 47.5

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1

average speed = 57.5 km/h

hope it will help you