Question

Americans’ salt consumption is increasing. The recommended daily intake of salt is 2300 milligrams per person. In 2006, American men consumed an average of 4300 milligrams of salt daily. This was a 54.7 percent increase over the average daily salt intake in 1974 (Source: National Health and Nutrition Examination Survey). What was the average daily salt intake for men in 1974? Round your answer to the nearest 10 milligrams.

Answer 1

namely, if the consumption in 1974 was "x" or the 100%, 4300 is 54.7% extra of that, so 4300 is really 100%+54.7%, or 154.7%, now, what is "x" then?

well
`\bf \begin{array}{ccllll} amount&\%\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 4300&154.7\\ x&100 \end{array}\implies \cfrac{4300}{x}=\cfrac{154.7}{100}`

solve for "x"