The speed of a train of $200 m$ long is $70 k m / h$ . How much time will it take to cross a platform of $500 m$ long?

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Solution

Given, speed of train $= 70$ km/hr
$= 70 \times \frac{5}{18} = \frac{350}{18}$
Total distance $= 200 + 500$
$= 700$
Time taken $= \frac{700}{\frac{350}{18}} = 36$ sec.

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The speed of a train of 200m long is 70km/h. How much time will it take to cross a platform of 500m long?

Given, speed of train=70km/hr=70×518=35018Total distance=200+500=700Time taken=70035018=36 sec.

The speed of a train of $200 m$ long is $70 k m / h$ . How much time will it take to cross a platform of $500 m$ long?

Given, speed of train $= 70$ km/hr
$= 70 \times \frac{5}{18} = \frac{350}{18}$
Total distance $= 200 + 500$
$= 700$
Time taken $= \frac{700}{\frac{350}{18}} = 36$ sec.