Question

A train moves with a speed of 30 km in the first 15 minutes with another speed of 40 kilometre per hour 15 minutes and then with a speed of 60 km in the last 30 minutes calculate the average speed of a train for its journey

Answer 1

Explanation:

Here's ur answer

I hope it helps u

Answer 2

Explanation:

for fist speed

30 *15 =7.5 km

60

for second speed

40 *15 =10 km

60

for third speed

60*30 = 30 km

60

Now

7.5+10+30 =47.5km

total time taken to complete journey

60 minutes

therefore average speed is 47.5km/hr

therefore