Arithmetic

Ratio, Proportion & Variation

Easy

If $x : y = 4 : 3$ , then $(x^2 + y^2) : (x^2 - y^2)$ is:

$\dfrac{25}{7}$

$\dfrac{7}{25}$

$\dfrac{7}{1}$

$\dfrac{1}{7}$

✅ Correct Option: 1

Take $x = 4k$ , $y = 3k$ . Then $x^2 + y^2 = 16k^2 + 9k^2 = 25k^2$ and $x^2 - y^2 = 16k^2 - 9k^2 = 7k^2$ . The ratio is $\dfrac{25}{7}$ .

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If x:y=4:3x : y = 4 : 3x:y=4:3, then (x2+y2):(x2−y2)(x^2 + y^2) : (x^2 - y^2)(x2+y2):(x2−y2) is:

Solution

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Keyboard Shortcuts

CUET General Test Past Year Questions (Topic-Wise)

If $x : y = 4 : 3$ , then $(x^2 + y^2) : (x^2 - y^2)$ is: