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?

पर्याय

• 750 m

• 690 m

• 760 m

• 810 m

Answer 1

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.