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?
| 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 | |