Replace $' □'$ in each of the following by the correct number:
$\frac{2}{3} = \frac{□}{15}$

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Solution

The denominator in the second fraction is $15$ .
To get $15$ from $3$ , we have to multiply $3$ by $5$
$∴$ To make both fraction equal, we multiply the numerator and denominator of the first fraction by $5$ .
so, $\frac{2}{3}$ $=$ $\frac{2 \times 5}{3 \times 5} = \frac{10}{15}$
Hence, the value in the box is $10$ .

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