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

      Find the fourth proportion of (5k + 5), (10k + 10) and

      (15k + 15). (Note: 'k' is the smallest prime number.)
      A 60 Correct Answer Incorrect Answer
      B 75 Correct Answer Incorrect Answer
      C 90 Correct Answer Incorrect Answer
      D 105 Correct Answer Incorrect Answer

      Solution

      'k' = 2 5k + 5 = 5 Γ— 2 + 5 = 15 10k + 10 = 10 Γ— 2 + 10 = 30 15k + 15 = 15 Γ— 2 + 15 = 45 Let the fourth proportion be 'm'. 15 : 30 :: 45 : m So, 15 Γ— m = 30 Γ— 45 Or, 'm' = 90

      Practice Next
      ask-question