Boats & Streams · Question 11 · Medium

A boat covers 24 km upstream in 6 hours and 24 km downstream in 4 hours. What is the speed of the boat in still water?

  1. 5 km/h
  2. 4 km/h
  3. 6 km/h
  4. 1 km/h
Answer and explanation

Answer: A. 5 km/h

Explanation: Upstream speed = 4 km/h, downstream = 6 km/h. Boat speed = (6 + 4)/2 = 5 km/h.

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