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    Question

    39.9% of 1720 + 80.2% of 630 = 89.9% of 1280 +

    ? What approximate value should come in place of question mark (?) in the following equations?
    A 40 Correct Answer Incorrect Answer
    B 60 Correct Answer Incorrect Answer
    C 20 Correct Answer Incorrect Answer
    D 50 Correct Answer Incorrect Answer
    E 110 Correct Answer Incorrect Answer

    Solution

    39.9% of 1720 + 80.2% of 630 = 89.9% of 1280 + ? 40% of 1720 + 80% of 630 = 90% of 1280 + ? 688 + 504 = 1152 + ? ? = 40

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