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 :

A) 9.5 km/hr
B) 10 km/hr
C) 10.5 km/hr
D) 11 km/hr

Answer 1

Answer:

Hope this helps you.....................

Step-by-step explanation:

Man's speed with the current (Downstream speed)=speed of man(x)+speed of current

15km/hr=x+2.5km/hr

x=(15-2.5)km/hr

x=12.5km/hr

Man's speed against the current(Upstream speed)=speed of man-speed of current

Upstream speed=12.5km/hr-2.5km/hr

Upstream speed=10km/hr

So, the ans is C. 10km/hr