A man’s speed with the current is 17 km/hr and the speed of the current is 2.5 km/hr. the man’s speed against the current is :
Select
A) 8.5 km/hr
B) 12 km/hr
C) 10 km/hr
D) 12.5 km/hr
E) None of these
Solution   Man's rate in still water = (17-2.5) km/hr = 14.5 km/hr.   Man's rate against the current = (14.5-2.5) km/hr = 12 km/hr Answer 12 km/hr
<result>B</result>
A man’s speed with the current is 17 km/hr and the speed of the current is 2.5 km/hr. the man’s speed against the current is :