In one hour, a boat goes 8 km along the stream and 2 km against the stream. the sped of the boat in still water (in km/hr) is :	Pick:
A) 3 B) 5 C) 8 D) 9 E) 10
Solution   Speed in still water= 1/2(8+2) km/hr= 5kmph. Answer 5
<result>B</result>
In one hour, a boat goes 8 km along the stream and 2 km against the stream. the sped of the boat in still water (in km/hr) is :