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      Question

      What approximate value will come in place of the

      question mark (?) in the following question?(Note: You are not expected to calculate the exact value.) 19.88% of ? + 39.92% of 799.68 = 16 of 3999.72%
      A 400 Correct Answer Incorrect Answer
      B 600 Correct Answer Incorrect Answer
      C 800 Correct Answer Incorrect Answer
      D 1000 Correct Answer Incorrect Answer
      E 1200 Correct Answer Incorrect Answer

      Solution

      19.88% of ? + 39.92% of 799.68 = 16 of 3999.72% 20% of ? + 40% of 800 ~ 12 of 4000% 20% of ? + 320 ~ 0.12 × 4000 20% of ? ~ 480 – 320 ? ~ 160/0.20 ? ~ 800

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