Boats & Streams · Question 4 · Easy

A boat goes 36 km downstream in 3 hours. If the stream flows at 2 km/h, what is the speed of the boat in still water?

  1. 14 km/h
  2. 8 km/h
  3. 12 km/h
  4. 10 km/h
Answer and explanation

Answer: D. 10 km/h

Explanation: Downstream speed = 36 ÷ 3 = 12 km/h. Boat speed = 12 − 2 = 10 km/h.

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