Multiple choice

The speed of a boat in still water is 15 km/hr and the rate of current is 3 km/hr. What is the distance travelled downstream in 12 minutes?

  1. $2.8 km$
  2. $3.3 km$
  3. $3.6 km$
  4. $4.1 km$
  5. $5.4 km$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Downstream speed = speed in still water + speed of current = 15 + 3 = 18 km/hr. Time = 12 minutes = 12/60 hours = 0.2 hours. Distance = Speed × Time = 18 × 0.2 = 3.6 km. This matches option C.

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