Question

A man's speed 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

X+Y=15

Y=2.5

X=15-2.5=12.5

against current

X-Y=12.5-2.5=10Km/hr

X=speed of man in still water

Y=speed of current