The speed of a boat in still water is 60kmph and the speed of the current is 20kmph. Find the speed downstream and upstream?
Options:
(A) 80,70 kmph
(B) 87,40 kmph
(C) 80,40 kmph
(D) 70,40 kmph
(E) 80,44 kmph Let's think first. Stream of consciousness:
Speed downstream = 60 + 20 = 80 kmph
Speed upstream = 60 - 20 = 40 kmph
So, the answer is (C).