Gnpth wrote:
A boat moves from city X to city Y. What is the speed of the boat in still water?
(1) Speed of the river current is 3 m/s
(2) The distance between city X and the boat is increasing at the rate of 2 m/s
SaGa wrote:
abhishek911 wrote:
This question seems wrong. We need to know whether the river's current is against the boat's direction or along it. The correct answer should be E
Question is correct.
Consider this scenario in which we are considering both statements and it is given the speed of current is 3 m/s and speed of boat is 2m/s.
If the river was flowing in the direction of movement of the boat, the speed of the boat cannot be less than 3m/s.
Hence, we conclude that the river current is in the opposite direction of movement of the boat.
To add to the above explanation:
Case 1: Boat going against the direction of the current
Speed of the boat in still water - Speed of river current = Speed of boat in current
=> Speed of the boat in still water = Speed of boat in current + Speed of river current = 2 + 3 = 5 m/s
Case 2: Boat going in the direction of the current
Speed of the boat in still water + Speed of river current = Speed of boat in current
=> Speed of the boat in still water = Speed of boat in current - Speed of river current = 2 - 3 = -1 m/s (Negative speed is not possible)
Therefore, only case 1 is valid. Hence, ANSWER = C.