Question

A passenger train takes one hour less when its speed is increased by
15km/ hr. Then its usual speed for a journey of 300 km .Find the usual speed
of the train.​

Answer 1

Answer:

60 km/hr is the speed of train

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Answer 2

Step-by-step explanation:

Let the usual speed be v.

If the train usually takes time t to complete it's journey.

$v = \frac{300}{t}$

now

$v + 15 = \frac{300}{t - 1}$

$\frac{300}{t} + 15 = \frac{300}{t - 1}$

On solving this equation, you can get the answer.