Multiple choice

The speed of a boat in still water is 15 km/hand the rate of stream is 5 km/h. The distance travelled downstream in 24 minutes is

  1. 8KM

  2. 6KM

  3. 4KM

  4. 16KM

  5. 20KM
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A Correct answer
Explanation

Downstream speed = 15 + 5 = 20 km/h. Time = 24 minutes = 24/60 hours = 0.4 hours. Distance = 20 * 0.4 = 8 km.

AI explanation

The downstream speed of the boat is calculated by adding its still water speed to the stream rate, giving 15 + 5 = 20 km/h. Using the distance formula where distance equals speed multiplied by time, we convert 24 minutes to hours by dividing by 60, yielding 0.4 hours. Multiplying the downstream speed by this time gives 20 * 0.4 = 8 km.

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