Question

If the numerator of a fraction equivalent to $\frac{9}{18}$ is 27, what is its denominator?

Answer 1

We know that, $\frac{9}{18}=\frac{27}{?}$
Here, the numerators of the two fractions are 9 and 27 respectively.
Now, we have to find a number, which, when multiplied by 9 gives 27.
We know that 9 $\times$ 3 = 27.
Hence, we multiply the numerator and the denominator of the given fraction by $3=\frac{9\times 3}{18\times 3}=\frac{27}{54}.$
Therefore, the denominator of the equivalent fraction of $\frac{9}{18}$ is 54.