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emperor
 Post subject: July 11th Quiz: Question 3 - Length of the train
PostPosted: Thu Jul 28, 2005 2:23 am 
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Joined: Thu Jun 16, 2005 8:25 am
Posts: 5
A train crosses a lady standing in a platform of length 300m in 20 seconds and the platform in 30 seconds. What is the length of the train in meters?

(A) 300m
(B) 900m
(C) 600m
(D) 150m
(E) Insufficient data

Could anyone explain how to solve?
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ksb
 Post subject: Speed, time distance - train length problem
PostPosted: Thu Jul 28, 2005 6:22 am 
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Joined: Tue Dec 28, 2004 2:34 am
Posts: 81
Location: Chennai, India
When a train crosses the lady, the distance covered by the train is the length of the train.

When the train crosses the platform on which the lady is standing, the distance traveled by the train is the sum of the lengths of the train and the platform.

You can then use the relation that Distance traveled = speed * time and find the answer.

Please ensure that you use the correct units for speed, time and distance.

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KSB
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emperor
 Post subject:
PostPosted: Sat Jul 30, 2005 11:04 pm 
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Joined: Thu Jun 16, 2005 8:25 am
Posts: 5
Baskar,

Thanks again.
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