The speed of a boat along and against the current are 16 km/h and 12 km/h respectively. The speed of the current is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e 2 km/h.
Speed of boat along the stream = x + y
Speed of boat against the stream = x - y
Where, x and y are the speed of boat and stream
According to the question;
⇒ x + y = 16 ----- (1)
⇒ x - y = 12 ----- (2)
Adding both equations (1) and (2), we get:
⇒ 2x = 28
⇒ x = 14 and y = 2
Hence,
The speed of stream = 2 km/h