Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is

Choose the correct answer:

A) 1 : 3

B) 3 : 2

C) 3 : 7

D) 2 : 3

Detailed Explanation

Let the speeds of the two trains be x m/sec and y m/sec respectively.

Then, length of the first train = 27x metres,

and length of the second train = 17y metres.

(27x + 17y)/(x+ y) = 23

   27x + 17y = 23x + 23y

   4x = 6y

   x/y = 3/2

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Two trains running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively and they cross each other in 23 seconds. The ratio of their speeds is

Choose the correct answer:

Detailed Explanation

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