Two buses travel to a place at 45 km./hr. and 60 km./hr.

Two buses travel to a place at 45 km./hr. and 60 km./hr. respectively.
If the second bus takes 5 1 hours
2
less than the first for the journey, the length of the journey is :

Time taken by bus moving at 60 kmph = t hours
Distance = Speed × Time

∴ 60 × t = 45 ×		t +	11
			2

⇒ 60t – 45t =	45 × 11
	2

⇒ 15t =	45 × 11
	2

⇒ t =	45 × 11	=	33
	15 × 2		2

=	60 × 33	= 990 km.
	2

If the second bus takes 5	1	hours
	2