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Excluding stoppage station, the speed of a train is 60 km/h and including stoppage station it travels at a speed of 45 km/h. For how many minutes does the train stop per hour?

Excluding stoppage station, the speed of a train is 60 km/h and including stoppage station it travels at a speed of 45 km/h. For how many minutes does the train stop per hour? Correct Answer 15 min

Given:

Excluding stoppage station, the speed of a train is 60 km/h and including stoppage station it travels at a speed of 45 km/h.

Concept used:

Time × Speed = Distance

1 hour = 60 minutes

Calculation:

Let the distance be D

So, the time required to cover the distance without stoppage will be = (D/60) hours

Time required for the same distance to cover with stoppage  = (D/45) hours

Then, the train stop for {(D/45) - (D/60)} hours ⇒ D/180 hours

So,

the stoppage time of the train per hour

= {(D/180) ÷ (D/45)} hours

⇒ 1/4 hours

⇒ (1/4 × 60) minutes

⇒ 15 minutes

∴ For 15 minutes the train stops per hour.

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