Quantitative Aptitude Ratio and Proportion Simple Ratios

If x ∶ y = 3 ∶ 2, then \(\frac{{{x^2} - {y^2}}}{{{x^2}\; + \;{y^2}}}= ?\)

1

5 ∶ 13

2

1 ∶ 5

3

2 ∶ 15

4

5 ∶ 2

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