With an average speed of 40km/hr. a train reached its destination in time. If it goes whith an average speed of 35km/hr, it is late by 15 minute . The total journey is?
Correct Answer: 70 km
Explanation:
Let total journey be y km.
From question y/35 - y/40= 15/60
⇒ y = ( 35 x 40 )/ ( 4 x 5 ) = 70
∴ Total Journey = 70 km
