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The length of a train and a platform is equal. The train at the speed of 90 km/hr crosses the platform in 1 minute. What is the length of platform? -

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Question

The length of a train and a platform is equal. The train at the speed of 90 km/hr crosses the platform in 1 minute. What is the length of platform?

Options

  • 750 m

  • 690 m

  • 760 m

  • 810 m

MCQ

Solution

750 m

Explanation:

Let the length of platform be x metre

Speed = 90 kmph

= `((90 xx 5)/18)` m/sec = 25 m/sec

Time = 1 minute = 60 seconds

∴ `(2x)/25` = 60

⇒ `2x = 25 xx 60`

⇒ `x = (25 xx 60)/2` = 750 metre.

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Time, Speed and Distance (Entrance Exam)
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