πŸ“’ Too many exams? Don’t know which one suits you best? Book Your Free Expert πŸ‘‰ call Now!

  • google app store apple app store
  • βœ–

      Question

      Boat β€˜A’ can cover 180 km in still water in 12

      hours. In still water, if the ratio of the speed of boat β€˜A’ to that of β€˜B’ is 3:4 and the speed of stream is 3 km/hr then find the time taken by boat β€˜B’ to cover the 253 km in downstream.
      A 10 hours Correct Answer Incorrect Answer
      B 12 hours Correct Answer Incorrect Answer
      C 11 hours Correct Answer Incorrect Answer
      D 13 hours Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Speed of boat β€˜A’ in still water = 180/12 = 15 km/hr Speed of boat β€˜B’ in still water = 15 Γ— (4/3) = 20 km/hr Downstream speed of boat β€˜B’ = 20 + 3 = 23 km/hr Time taken by boat β€˜B’ to cover 253 km in downstream = 253/23 = 11 hours

      Practice Next
      ask-question