Multiple choice

The speed of a boat in still water is $8$ km/hr and speed of the stream is $3$ km/hr. Find the distance in km covered by the boat in $12$ hrs downstream .

  1. $120$
  2. $150$
  3. $132$
  4. $176$
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C Correct answer
Explanation

Downstream speed = Boat + Stream = 8 + 3 = 11 km/hr. Distance = Speed * Time = 11 * 12 = 132 km.

AI explanation

Using the downstream speed formula, the effective speed is the sum of the boat's speed and the stream's speed, which gives 8 + 3 = 11 km/hr. Applying the distance formula, Distance = Speed multiplied by Time, we get 11 multiplied by 12. This yields a total distance of 132 km.

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