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SSC CGL 2022 PYQ — Question 65

SSC CGL - 06 Dec 2022 - Shift 2 • Quantitative Aptitude • Q65

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If 4x2 + y2 = 40 and xy = 6, find the positive value of 2x + y.

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Correct answer: A

Explanation

The correct answer is Option 1 i.e. 8.

We have been given in the question,

4x2 + y2 = 40 and xy = 6

⇒ (2x + y)2 = 4x2 + y2 + 4xy

⇒ (2x + y)2 = 40 + 24

⇒ 2x + y = 8