Question

John O'Sullivan has just completed his first year in business. His records show that he spent the following in advertising:

Internet $600 Radio $650 Yellow Pages $700 Local flyers $400



What percent of John's advertising was spent on the Yellow Pages? (Round to the nearest hundredth percent.)

Answer 1

so, his advertising expenditure is 600+ 650+700+400, namely 2350

he spent 700 on the yellow pages, how much is 700 of 2350 in percentage?

well, if we take 2350 to be 100%

then
`\bf \begin{array}{ccllll} amount&\%\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 2350&100\\ 700&x \end{array}\implies \cfrac{2350}{7000}=\cfrac{100}{x}`

solve for "x"