Question

If a train runs at 40 kmph it reaches its destination late by 11 minutes.But if it runs at 50 kmph it is late by 5 minutes only.Find the distance to be covered by the train.

Answer 1

Let the correct time to complete the journey be x min.

Distance covered in (x + 11)  

min.= Distance covered in (x + 5) min at 50 km/hr

∴ (x+11)60 * 40

= (x+5)60 * 50

=x = 19 min.