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Two trains with their speeds in the ratio of are going in opposite directions along parallel tracks. If each takes to cross a telegraph post, then the time taken by the train to cross each other completely will be _____.
(a)
(b)
(c)
(d)

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Important Questions on Ratio and Proportion
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The two trains leave Varanasi for Lucknow at and at . Respectively and travel at a speed of and respectively. How many kilometers from Varanasi will both trains meet?

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