What is the speed of the stream if a canoe rows upstream at 9 km/hr and downstream at 12km/hr
Choose the correct choice from the following answers
A) 1 kmph  B) 4 kmph  C) 3 kmph  D) 2 kmph  E) 1.5 kmph
Sol.   Speed of stream = 1/2(12 -9) kmph = 1.5 kmph.   Answer 1.5 kmph
<result>E</result>
What is the speed of the stream if a canoe rows upstream at 9 km/hr and downstream at 12km/hr