If $20\%$ of a number is $12$, what is $30\%$ of the same number?
To find $20\%$ of a number, I multiply the number by $0.2$. So, if $20\%$ of a number is $12$, then I can write the equation $0.2x = 12$, where $x$ is the number. To solve for $x$, I can divide both sides by $0.2$, which gives me $x = 12/0.2 = 60$. So, the number is $60$. Now, to find $30\%$ of $60$, I multiply $60$ by $0.3$. That gives me $0.3 \times 60 = 18$. 