Question

36) The speed of a boat in still water is 5km/hr. If the speed of the boat against the stream is 3

km/hr, what is the speed of the stream?
1. 1.5 km/hr
2. 2 km/hr
3. 2.5 km/hr
4. 1 km/hr​

Answer 1

2km/hr

Explanation:

Given the following

Speed of boat in water = 5km/hr

Speed of boat against stream = 3km/hr

Since the speed of boat is going against that of the stream, hence, the speed of the stream will be the difference between the speed of boat and that when the boat is against the stream

Speed of stream = 5km/hr - 3km/hr

Speed of stream = 2km/hr

hence the required speed of stream is 2km/hr