Question

if revenue for week is $2000 and labor cost consists of 2 workers earning $8 per hour who worked 40 hours each, what is the labor cost as a percentage of Revenue

Answer 1

40 hrs at 8 bucks, 40*8 or 320, now, is 2 workers, so 320+320 or 640

so... how much is 640 from 2000 in percentage? well, if we take 2000 as the 100%, then
`\bf \begin{array}{ccllll} amount&\%\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 2000&100\\ 640&x \end{array}\implies \cfrac{2000}{640}=\cfrac{100}{x}`

solve for "x"