1.

if a train runs at 40 km per hour it reach its destination late by 11 minutes but if it run at 50 km per hour it is late by 5 minute only. find the correct time for the train to complete its journey.

Answer»

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.



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