Question

A man'sspeed with the current is 15 km/hr and the speed of the current is 2.5 km/hr.The man's speed against the current is:

Answer 1

man's speed=x

current speed =y=2.5km\hr

acc. to the problem,

x+y=15

x+2.5=15

x=15-2.5

x=12.5

man's speed against current=x-y

12.5-2.5=10km\hr

man's speed against current=10 km\hr