Репост из: లక్ష్మణ్
If he had not changed his speed
3 hrs ( for 25% distance)
12 hrs ( total distance)
1:2-----speed
2:1------time
1------>3
2------>6
12-6=6 hrs after jounery
3 hrs ( for 25% distance)
12 hrs ( total distance)
1:2-----speed
2:1------time
1------>3
2------>6
12-6=6 hrs after jounery