![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?](https://www.gkseries.com/blog/wp-content/uploads/2023/07/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.jpg)
Question | 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? | |
Type | multiple_choice | |
Option | 1.5 km/hr | incorrect |
Option | 2 km/hr | correct |
Option | 2.5 km/hr | incorrect |
Option | 1 km/hr | incorrect |
Solution | Let the speed of stream = X km/hr Speed of boat = 5 km/hr Speed upstream = 3km/hr Apply formula: Speed upstream = speed of boat – speed of stream ∴ 3 = 5 – X X = 5 – 3 = 2 km/hr |