For what value of $k$ is $k \%$ of 25 equal to $20 \%$ of 30 ?
Since $20 \%$ of 30 is $0.2 \times 30=6$, we want to find $k$ so that $k \%$ of 25 equals 6 .

This means $\frac{k}{100} \times 25=6$ or $\frac{k}{4}=6$ and so $k=24$.

ANSWER: 24