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  9. Q54

SSC GD Constable 2012 · Question 54 of 95

If x2 + 9y2 = 6xy, then x: y is

  1. A1:3
  2. B3:2
  3. C3:1Correct
  4. D2:3

Answer: C. 3:1

Explanation

x2 + 9y2 =6xy ⇒ x2 − 6xy + 9y2 =0 ⇒ (x − 3y)2 =0 ⇒ x-3y=0 ⇒ x=3y x 3 ⇒ y= 1 ∴ x:y=3:1

Source: Solved SSC GD 2012 Shift 1 Paper with Solutions — Testbook · reliable-secondary

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