A man travelled a certain distance by train at the rate of 25 kmph. and walked back at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, the distance was:
A man travelled a certain distance by train at the rate of 25 kmph. and walked back at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, the distance was:
[A]15 km
[B]20 km
[C]25 km
[D]30 km
20 km
Let the distance be x km.
Total time = 5 hours 48 minutes
Hence option [B] is the right answer.
Rakesh kumar sahoo
November 19, 2017 at 11:22 amdon’t understand
because x/25 and x/4
DIBYAJYOTI BHATTACHARYYA
December 17, 2017 at 11:45 pmAt first instance it travels x Km at 25 kmph. So the time it took =x/25.
At second instance it travels x Km at 4 kmph. So the time it took =x/4.
Hence Total Time = x/25 + x/4