Student: If soundharya rows 49 km upstream and 77 km down steam taking 7 hours each, then the speed of the stream\nOptions:\n(A) 6 kmph\n(B) 5 kmph\n(C) 2 kmph\n(D) 3 kmph\n(E) 4 kmph.
Another student: Let's say, hmmm...

User
Speed upstream = 49/7 = 7 kmph\nSpeed down stream = 77/7 = 11kmph\nSpeed of stream = ½ (11-7) = 2 kmph Final answer: (C).
Assistant