Question

Jenny watched 27 movies that she thought were very good. She watched 45 movies over the whole year. Of the movies she watched, what percentage did she think were very good?

Answer 1

if we take 45 as the 100%, what is 27 off of it in percentage?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 45&100\\ 27&x \end{array}\implies \cfrac{45}{27}=\cfrac{100}{x}\implies \cfrac{5}{3}=\cfrac{100}{x} \\\\\\ 5x=300\implies c=\cfrac{300}{5}\implies c=60$