In one hour,a boat goes 11 km along the stream and 5 km against the stream.The speed of the boat in still water is : Select:
A) 3  B) 5  C) 8  D) 9  E) 10
Solution   Speed in still water =1/2(11+5) kmph = 8 kmph.Answer 8
<result>C</result>
In one hour,a boat goes 11 km along the stream and 5 km against the stream.The speed of the boat in still water is :