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GATE2014 EC-1: GA-8
makhdoom ghaya
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Quantitative Aptitude
Mar 18, 2016
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Arjun
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A train that is $280$ metres long, travelling at a uniform speed, crosses a platform in $60$ seconds and passes a man standing on the platform in $20$ seconds. What is the length of the platform in metres?
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makhdoom ghaya
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Best answer
Speed of train$=280/20=14m/s$
Let $L$ be the length of platform
$280+L$ covered in $60s$
$\frac{280+L}{14}=60$
$280+L=840$
$L=840-280$
$L=560m$
Pooja Palod
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Mar 18, 2016
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For a train to cross a person, it takes 20 seconds for its 280m. so d=s*t then 280=s*20 then we get s=14m/s and in
60 seconds. Total distance travelled should be 840 bcz d=14*60 =840. Including 280 train length so length of plates =840-280=560
so answer is 560
rajan
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Answer:
560
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