Question

Atrain moves with a speed of 30 km/h in the first 15 minutes, with another speed of 40 km/h in the next
15 minutes and then with a speed of 60 km/h in the last 30 minutes. Calculate the average speed of the
train for this journey.​

Answer 1

Answer:

✴AVERAGE SPEED ✴

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Distance 1 = 30×15

= 450m

Distance 2 = 40×15

= 600m

Distance 3 = 60×30

= 1800m

Total distance = 1800+600+450

= 2850m

Total time = 15 + 15+30

= 60 .

Thus ,

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Answer 2

Answer:

Explanation :60