What is the length of a running train P crossing another running train Q? I. These two trains take 18 seconds to cross each other. II. These trains are running in opposite directions. III. The length of the train Q is 180 metr ?->(Show Answer!)

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1. What is the length of a running train P crossing another running train Q? I. These two trains take 18 seconds to cross each other. II. These trains are running in opposite directions. III. The length of the train Q is 180 metres.

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By: guest on 01 Jun 2017 05.48 pm

Let the length of the train P be x metres. II. These trains are running in opposite directions. III. Length of the train Q is 180 m. I. Time taken by P to cross Q = (180 + x) 18 = (180 + x) Relative speed Relative speed Thus, even with I, II and III, the answer cannot be obtained. Correct answer is (E).

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