A ship goes at 18 km/h downstream and at 16 km/h upstream. What will be the speed of the ship in still water?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 17 km/h.
Speed of ship(S) = (DOwnstream speed + Upstream speed)/2
⇒ S = (18 + 16)/2
⇒ S = 34/2 = 17 km/hr