Question

Find 60% of a quantity if 15% of the quantity is 45​

Answer 1

`\begin{array}{ccll} \%&Amount\\ \cline{1-2} 15 & 45\\ 60& x \end{array} \implies \cfrac{15}{60}~~=~~\cfrac{45}{x} \implies \cfrac{1}{4} ~~=~~ \cfrac{45}{x}\implies x=180`