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Which of the following formulas will be used to compute the downstream speed if the boat's speed in still water is u km/hr and the speed of the stream is v km/hr?
54. Which of the following formulas will be used to compute the downstream speed if the boat's speed in still water is u km/hr and the speed of the stream is v km/hr?
- (u- v) Km/hr
- (u+v) Km/hr
- u/v Km/hr
- u*v Km/hr
Answer
The correct answer is: B) (u+v) Km/hr
Explanation
The downstream speed of a boat is calculated by adding the boat's speed in still water (u km/hr) and the speed of the stream (v km/hr). The stream contributes to the boat's speed as it proceeds downstream (in the same direction as the stream), resulting in a quicker downstream speed. As a result, the right formula for calculating downstream speed is (u + v) km/hr.