In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:  Choose the correct answer:
A) 4 kmph	B) 5 kmph	C) 6 kmph	D) 7 kmph	E) 8 kmph
Speed in still water = ½ (11+5) kmph = 8 kmph   answer : 8 kmph
<result>E</result>
In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is: