Sriya with her family travelled from Bolpur to Suri by car

Sriya with her family travelled from Bolpur to Suri by car at a speed of 40 km/hr and returned to Bolpur at a speed of 50 km/hr. The average speed for the whole journey is

Average speed of journey =		2xy		kmph
		x + y

⇒	2 × 40 × 50	=	2 × 40 × 50
	40 + 50		90

⇒	400	= 44	4	kmph
	9		9

44	4	km/hr
	9

45	1	km/hr
	2