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Standard VIII

Mathematics

Fractions and Ratios

If a number w...

Question

If a number with $12$ has the same ratio as $8$ having with $10$ , then the number is :

15

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9.6

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7.5

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10

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Solution

The correct option is B $9.6$
Let the number be $x$
According to the question, we have
$x : 12 :: 8 : 10$
$\Rightarrow \frac{x}{12} = \frac{8}{10}$
$\Rightarrow x = \frac{12 \times 8}{10}$
$\Rightarrow x = 9.6$

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If a number with 12 has the same ratio as 8 having with 10, then the number is :

The correct option is B 9.6Let the number be xAccording to the question, we havex:12::8:10⇒x12=810⇒x=12×810⇒x=9.6

If a number with $12$ has the same ratio as $8$ having with $10$ , then the number is :

The correct option is B $9.6$
Let the number be $x$
According to the question, we have
$x : 12 :: 8 : 10$
$\Rightarrow \frac{x}{12} = \frac{8}{10}$
$\Rightarrow x = \frac{12 \times 8}{10}$
$\Rightarrow x = 9.6$