What is the length of the platform?
A train travelling at 48 kmph completely crosses another train having half its length and travelling in opposite direction at 42 kmph, in 12 seconds. It also passes a railway platform in 45 seconds. What is the length of the platform?

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Answers

2016-02-18T15:22:58+05:30
400 m. first we let length of 1st train be x so lenght of second train x/2
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