A man covers half of his journey at 6km/hr and the remaining

A man covers half of his journey at 6km/hr and the remaining half at 3km/hr. His average speed is

If the same distance are covered at different speed of x kmph and y kmph, the average speed of the

whole journey is given by =	2xy	kmph.
	x + y

∴ Required average speed =	2 × 6 × 3	=	36	= 4 kmph
	6 + 3		9