Respuesta :

Answer:

X=20

Step-by-step explanation:

20% of 9 is 1.8, and 36/1.8 is 20

[tex]\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em}\stackrel{\textit{20\% of 9}}{\left( \cfrac{20}{100} \right)9}\implies \cfrac{9}{5} \\\\\\ \stackrel{\textit{ratio of 36 to "x"}}{36:x}\implies \cfrac{36}{x}=\stackrel{\textit{20\% of 9}}{\cfrac{9}{5}}\implies 180=9x\implies \cfrac{180}{9}=x\implies 20=x[/tex]