A man travelled a certain distance by train at the rate

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

Let the distance be x km.
Total time = 5 hours 48 minutes

= 5 +	48	=		5 +	4		hours
	60				5

=	29	hours
	5

∴	x	+	x	=	29
	25		4		5

⇒	4x + 25x	=	29
	100		5

⇒ 5 × 29x = 29 × 100

⇒ x =	29 × 100	= 20 km.
	5 × 29

Second Method :
Here, x = 25, y = 4

Average speed =	2xy
	x + y

=	2 × 25 × 4	=	200
	25 + 4		29

Total Distance =	200	× 5	4
	29		5

=	200	×	29	= 40 km
	29		5