Question

If $\sqrt{\frac{16}{49}}=\frac{n}{49}$ then $n=$

• A. $4$
• B. $7$
• C. $16$
• D. $28$

Answer 1

The correct option is D $28$

$\sqrt{\frac{16}{49}}=\frac{n}{49}$
$\Rightarrow \frac{4}{7}=\frac{n}{49}$
$\Rightarrow n=\frac{49\times 4}{7}=28$