Explanation
In the question, we are asked 15% of 80 is 60% of what number?
Let the unknown number be x. Therefore, we can have the equation below;
[tex]\begin{gathered} \frac{15}{100}\times80=\frac{60}{100}\times x \\ 15\times80=60\times x \\ 60x=15\times80 \\ x=\frac{15\times80}{60} \\ x=20 \end{gathered}[/tex]Answer: 12