What is the speed of the stream if a canoe rows upstream at 6km/hr and downstream at 10km/hr Choose the correct choice:
A) 1 kmph	B) 4 kmph	C) 3 kmph	D) 2 kmph	E) 1.9 kmph
Sol.   Speed of stream = 1/2(10 -6) kmph = 2 kmph.   Answer 2 kmph
<result>D</result>
What is the speed of the stream if a canoe rows upstream at 6km/hr and downstream at 10km/hr