Sarita and Julie start walking from the same place in the

Sarita and Julie start walking from the same place in the opposite directions. If Julie walks at a
speed of 2 1 km/hr and Sarita at a speed
2
of 2 km/hr, in how much time will they be 18 km apart ?

=		5	+ 2		kmph =	9	kmph
		2				2

Time =	Distance	=	18
	Relative speed		(9/2)

=	18 × 2	= 4 hours
	9