Question

A train covered the first 5km of its journey at speed of 30km/h and next 15km at a speed of 45km/h.the average speed of the train was​

Answer 1

here is the correct answer of this ques

Answer 2

Answer:

The Average Speed of the train was 40km/h.

Step-by-step explanation:

Given Distance = 5km

Speed = 30km/h

Therefore, Time = Distance / Speed

= 5 / 30 = 1/6 h

Again,

Given Distance = 15km

Speed = 45km/h

Therefore, Time = Distance / Speed

= 15 / 45 = 1/3

Average Speed = Total distance / Total time

= 5 + 15 / 1/6 + 1/3

= 20 / 1/2 = 20 × 2

= 40km/h(answer).

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