Question

Two trains ‘T5’ and ‘U5’ of lengths 800 metres

Q: Answer-Two trains ‘T5’ and ‘U5’ of lengths 800 metres and 400 metres respectively are travelling towards ea...

Let the speeds be 5y and 3y ms respectively.Relative speed 5y 3y 8y msATQ,8y 60 800 400 480y 1200 y 2.5Therefore, required average 5y 3y 2 4y 4 2.5 10 ms 10 185 36 kmh

and 400 metres respectively are travelling towards each other. Ratio of speed of ‘T5’ to ‘U5’ is 5:3. If the trains take 60 seconds to cross each other from the time they meet, then find the average of speeds (in km/h) of trains ‘T5’ and ‘U5’.

A 18 km/h

B 21 km/h

C 24 km/h

D 36 km/h

E 45 km/h