Question

A soccer game is 90 minutes long 36 minutes have passed what percent of the game has passed

Answer 1

well, the soccer match was only 90 minutes, 36 passed, so if 90 is the 100%, what is 36 of 90 in percentage?

$\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 90&100\\ 36&p \end{array}\implies \cfrac{90}{36}=\cfrac{100}{p}\implies p=\cfrac{36\cdot 100}{90}$