📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!
  • google app store apple app store
    • ✖

      Question

      Speed of a boat in still water is three times the speed

      of the boat in upstream. If the boat takes 25 minutes to cover 50 km in downstream, then find the speed of the boat in still water.
      A 70 km/h Correct Answer Incorrect Answer
      B 73 km/h Correct Answer Incorrect Answer
      C 72 km/h Correct Answer Incorrect Answer
      D 74 km/h Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let speed of the boat in still water be ‘3x’ km/h. Speed of the boat in upstream = 3x ÷ 3 = ‘x’ km/h Speed of the stream = 3x – x = ‘2x’ km/h Speed of the boat in downstream = 3x + 2x = ‘5x’ km/h ATQ; (50/25) × 60 = 120 So, 5x = 120 Or, x = 24 So, speed of the boat in still water = 3 × 24 = 72 km/h

      Practice Next
      More Boats and streams Questions

      Relevant for Exams:

      ask-question