Question
Two trains ‘T7’ and ‘U7’ of lengths 540 metres and 360 metres respectively are travelling towards each other. Ratio of speed of ‘T7’ to ‘U7’ is 3:1. If the trains take 45 seconds to cross each other from the time they meet, then find the average of speeds (in km/h) of trains ‘T7’ and ‘U7’.
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