Question

a person sold 100 shares of stock at a loss of 40%. If the selling price for the 100 shares was 3000 which of the following comes closest to what was paid for the stock

Answer 1

one may note, you didn't really include any "of the folllowing" ones

anyway... if we take the 3000 as the 100%, what's the 40% of that?

well
`\bf \begin{array}{ccllll} amount&\%\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 3000&100\\ x&40 \end{array}\implies \cfrac{3000}{x}=\cfrac{100}{40}`

solve for "x"