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    3. Quantitative Aptitude
    4. Algebra
    5. If 4x² + y² = 40 and x y = 6, then find the value of 2x + y?

    Question

    If 4x² + y² = 40 and x y = 6, then find the value

    of 2x + y?
    A 14 Correct Answer Incorrect Answer
    B 6 Correct Answer Incorrect Answer
    C 8 Correct Answer Incorrect Answer
    D 10 Correct Answer Incorrect Answer

    Solution

    given - 4x² + y² = 40 and x y = 6 so now  (2x+y) ² =4x² +y²+4xy = 40+4×6=64 (2x+y) =8

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