What is the speed of the stream if a canoe rows upstream at 8 km/hr and downstream at 12km/hr
Select the correct option.
A) 1 kmph	B) 4 kmph	C) 3 kmph	D) 2 kmph	E) 1.9 kmph

Rationale: "sol . speed of stream = 1 / 2 ( 12 - 8 ) kmph = 2 kmph . answer d"
Answer: D