A man can row upstream at 12 km/hr and downstream at 18

A man can row upstream at 12 km/hr and downstream at 18 km/hr. The man’s rowing speed in still water is

Given that , Rate downstream = 18 kmph
Rate upstream = 12 kmph

∴ Speed of boat in still water =	1	(rate downstream + rate upstream)
	2

Speed of boat in still water =	1	(18 + 12) = 15 kmph
	2