Subject
Quantitative Aptitude
Topic
Speed & Distance
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:
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:
ক)
1 : 3খ)
3 : 2গ)
3 : 4ঘ)
None of theseExplanation
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 So, (27x + 17y)/(x+ y) = 23 => 27x + 17y = 23x + 23y => 4x = 6y => x/y = 3/2.Related questions
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