A car covers the first half of the distance between two

A car covers the first half of the distance between two places at 40 km/h and other half at 60 km/h. The average speed of the car is

Total distance = s;

Total time taken =	s/2	+	s/2	=	5s	=	s
	40		60		240		48

∴ Average speed =	total distance
	total time

=	s	= 48 km/h
	s/48

[Alt : v_av =	2v₁v₂	=	2 × 40 × 60	= 48 km/h]
	v₁ + v₂		40 + 60