Question

    What will come in the place of question mark (?) in the given expression?

    42% of 400 + 38% of 800 + ?2 =

    728
    A 16 Correct Answer Incorrect Answer
    B 22 Correct Answer Incorrect Answer
    C 38 Correct Answer Incorrect Answer
    D 32 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 42% of 400 + 38% of 800 + ?2 = 728 Or, 168 + 304 + ?2 = 728 Or, 472 + ?2 = 728 Or, ?2 = 728 - 472 Or, ?2 = 256 Or, ? = ± 16

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