### Instruction: 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 :
Answer Choices: (A) 8.5 km/hr (B) 12 km/hr (C) 10 km/hr (D) 12.5 km/hr (E) None of these.### Response: 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 B