Question

3.
A train travels the first 30 km of 120 km track with a uniform speed of 30 km/h. What should be the speed of the train
to cover the remaining distance of the track so that its average speed is 60 km/h for the entire trip?​

Answer 1

Hellodude❤️❤️❤️

Answer.

Speed of the train in the first 30 km, v1 = 30 km/h Speed of the train in the next 90 km, v2 (to be determined) Average speed = 60 km/h = (v1 + v2)/2 = (30 km/h + v2)/2 ⇒ v2 = 90 km/h

Hope it's helpful ☺️☺️☺️

Answer 2

hope this will help you

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