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… · ABC26GN3815
Subject: General Aptitude · Chapter: Boats and Streams
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)8.5 km/hr
(b)9 km/hr
(c)10 km/hr
(d)12.5 km/hr
Answer
Answer (as printed): C
Explanation
Man's rate in still water $=(15-2.5) \mathrm{km} / \mathrm{hr}=12.5 \mathrm{km} / \mathrm{hr}$. Man's rate against the current $=(12.5-2.5) \mathrm{km} / \mathrm{hr}$ $$=10 \mathrm{km} / \mathrm{hr} .$$