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

      An elephant can do a work as fast as two horses β€˜A’

      and β€˜B’ can do it by working together. If horse β€˜A’ alone can complete the work in 12 hours and horse β€˜B’ in 24 hours, then find the time taken by elephant to complete the work.
      A 8 hours Correct Answer Incorrect Answer
      B 4 hours Correct Answer Incorrect Answer
      C 12 hours Correct Answer Incorrect Answer
      D 16 hours Correct Answer Incorrect Answer
      E 24 hours Correct Answer Incorrect Answer

      Solution

      Let the total work = 24 units Efficiency of horse who can complete the work in 12 hours = 24/12 = 2 units/hour Efficiency of horse who can complete the work in 24 hours = 24/24 = 1 units/hour Therefore, time taken by both horses to complete the work together = 24/(2 + 1) = 8 hours Therefore, time taken by the elephant to complete the work = 8 hours

      Practice Next
      ask-question