Question

Two trains 160 m and 170 m long run at the speed of 62 km/hr and 46 km/hr respectively in opposite directions. Find the time (in seconds) which they take to cross each other?​

Answer 1

Explanation:

Relative Speed = 60+40 = 100 kmph

= 100*(5/18) = 250/9 m/sec

Distance = 140+160 = 300 meters

Time = Distance/Speed

300*(9/250) = {54}{5}

= 10.8 second

So the time trains will take to cross each other will be 10.8 seconds