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      Question

      The average of two numbers β€˜M’ and β€˜N’ is 250

      such that they are in the ratio 2:3 respectively. Another number β€˜O’ is 120 more than β€˜N’ and fourth number β€˜P’ is 20% of the β€˜M’. Find the average of β€˜O’ and β€˜P’.
      A 225 Correct Answer Incorrect Answer
      B 230 Correct Answer Incorrect Answer
      C 235 Correct Answer Incorrect Answer
      D 240 Correct Answer Incorrect Answer

      Solution

      Sum of β€˜M’ and β€˜N’ = 250 Γ— 2 = 500
      Therefore,
      β€˜M’ = 500 Γ— (2/5) = 200
      β€˜N’ = 500 – 200 = 300
      β€˜O’ = 300 + 120 = 420
      β€˜P’ = 0.2 Γ— 200 = 40
      Required average = {(420 + 40)/2} = 230

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