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      Question

      70.008% of 399.98 + ?% of 399.999 = 80.105% of

      599.998 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.)
      A 90 Correct Answer Incorrect Answer
      B 25 Correct Answer Incorrect Answer
      C 16 Correct Answer Incorrect Answer
      D 50 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, 70.008% of 399.98 + ?% of 399.999 = 80.105% of 599.998 Or, 70% of 400 + ?% of 400 ~ 80% of 600 Or, 0.7 Γ— 400 + (?/100) X 400 ~ 0.8 X 600 Or, 280 + ? Γ— 4 ~ 480 Or, ? Γ— 4 ~ 480 - 280 Or, ? ~ (200/4) So, ? ~ 50

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