The ratio between two numbers is 7 : 3. If the smaller number is 210 , find the larger number

420

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490

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390

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690

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Solution

The correct option is B
490

Let the numbers be $7 x$ and $3 x$

Given the smaller number = 210

$∴ 3 x = 210$

$x = 70$

Hence the larger number = $(7) \times (70)$

= 490

Hence the larger number = 490

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