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    Question

    What approximate value will come in place of question (?) in the following given expression? You are not expected to  calculate the exact value.

    (74.93% of 640.11 + 3/4 of 359.79)² - (1/3 of 80.87 ×

    2)² = ?
    A 546225 Correct Answer Incorrect Answer
    B 559584 Correct Answer Incorrect Answer
    C 548400 Correct Answer Incorrect Answer
    D 552441 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    (74.93% of 640.11 + 3/4 of 359.79)² - (1/3 of 80.87 × 2)² = (0.75 × 640 + (3/4) × 360)² - ((1/3) × 81 × 2)² = (480 + 270)² - (54)² = 750² - 54² = (750 + 54)(750 - 54) = 804 × 696 = 559584

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