Question

A train travels the first 15 km at a uniform speed of 30 km/h; the next 75 km at a uniform speed
50 km/h; and the last 10 km at a uniform speed of 20 km/h. Calculate the average speed for the entire tra
journey.
y speed T+ travels 15
in 5 seconds.​

Answer 1

The train will travel 80 km in the total journey . In 3y hours

Answer 2

Explanation:

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