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
Choose the correct choice from the following answers:
A) 8.5 km/hr  B) 9 km/hr  C) 10 km/hr  D) 12.5 km/hr  E) None
Solution   Man's rate in still water	= (15 - 2.5) km/hr   = 12.5 km/hr.   Man's rate against the current	= (12.5 - 2.5) km/hr   = 10 km/hr.   Answer 10 km/hr
<result>C</result>
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