Question

If a train takes 15min to go a distance of 73km then how much time it will take to go 1km

Answer 1

Case1
Speed=dis/time
=73/15divide by 60
=73*60/15
=292 kmph

Case 2
Time=dis/speed
=1/292 divided by 5/18
=20 sec

Therefore it will take 20 sec to cover 1 km