If sushi rows 27 km upstream and 81 km down steam taking 9 hours each, then the speed of the stream\nOptions:\n(A) 12 kmph\n(B) 13 kmph\n(C) 22 kmph\n(D) 20 kmph\n(E) 15 kmph Stream of consciousness first, then make a decision:
User
Speed upstream = 27/9 = 3 kmph\nSpeed down stream = 81/3 = 27 kmph\nSpeed of stream = ½ (27-3) = 12 kmph
Thus, the answer is (A).
Assistant