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 ___ km/hr.

Answer 1

Answer:

10 km/hr

Step-by-step explanation:

u: speed of man

v: speed of current

u+v = 15

v=2.5

u=15-2.5=12.5

man's speed against current = u-v = 12.5 -2.5 =10km/hr