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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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