Student: The speed of a boat in still water is 60kmph and the speed of the current is 30kmph. Find the speed downstream and upstream?
Options:
(A) kmph
(B) kmph
(C) kmph
(D) kmph
(E) kmph.
Another student: Let's say, hmmm...

user
Speed downstream = 60 + 30 = 90 kmph
Speed upstream = 60 - 30 = 30 kmph Final answer: (D).
assistant