The speed of a boat in still water is 60kmph and the speed of the current is 20kmph. Find the speed downstream and upstream?

A. 35, 25 kmph
B. 80, 40 kmph
C. 40, 60 kmph
D. 50, 55 kmph

Explanation:

Speed downstream = 60 + 20 = 80 kmph
Speed upstream = 60 – 20 = 40 kmph