Discussion of Question with ID = 011 under Boats-and-Streams

This is the discussion forum for this question. If you find any mistakes in the solution, or if you have a better solution, then this is the right place to discuss. A healthy discussion helps all of us, so you are requested to be polite and soft, even if you disagree with the views of others. The question and its current solution has also been given on this page.

Advertisement

Question

If the speed of a boat in the direction of the stream current is 28 km/h, and the speed of the current is 12 km/h, what would be the speed of the boat against the current?

A

4 km/h.

B

5 km/h.

C

3 km/h.

D

7 km/h.

Soln.
Ans: a

Speed of the boat in still water is the difference between its downstream speed and the speed of the stream, which is 28 - 12 = 16 km/h. Hence, the speed of the boat against the current is 16 - 12 = 4 km/h.


Comments and Discussion