Question

Two trains ‘T4’ and ‘U4’ of lengths 360 metres and 540 metres respectively are travelling towards each other. Ratio of speed of ‘T4’ to ‘U4’ is 2:3. If the trains take 36 seconds to cross each other from the time they meet, then find the average of speeds (in km/h) of trains ‘T4’ and ‘U4’.

A 36 km/h
B 40 km/h
C 45 km/h
D 54 km/h
E 60 km/h
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