๐Ÿ“ข Too many exams? Donโ€™t know which one suits you best? Book Your Free Expert ๐Ÿ‘‰ call Now!

  • google app store apple app store
  • โœ–

      Question

      Speed of current is equal to 25% of speed of boat in

      still water. If the boat takes 5 hours to cover 120 km in still water, then find the time taken by the boat to cover 108 km in upstream.
      A 5 hours Correct Answer Incorrect Answer
      B 6 hours Correct Answer Incorrect Answer
      C 4 hours Correct Answer Incorrect Answer
      D 3 hours Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Speed of the boat in still water = 120 รท 5 = 24 km/h Speed of current = 24 ร— 0.25 = 6 km/h Therefore, upstream speed of the boat = 24 โ€“ 6 = 18 km/hr Required time taken = 108 รท 18 = 6 hours

      Practice Next
      ask-question