Question

$\text{If}\frac{9}{7}\text{and}\frac{a}{63}$ are equivalent fractions, what is the value of a?

• A. 54
• B. 63
• C. 72
• D. 81

Answer 1

The correct option is D 81

If $\frac{9}{7}$ and $\frac{a}{63}$ are equivalent fractions,then
$\frac{9}{7}$ $=$ $\frac{a}{63}$

$\Rightarrow$ $\frac{9\times 9}{7\times 9}$ $=$ $\frac{a}{63}$

$\Rightarrow$ $\frac{81}{63}$ $=$ $\frac{a}{63}$

$\therefore$ $a=81$