Respuesta :

if we take 85 to be the 100%, how much is the retail price, namely the 170%?

[tex]\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 85&100\\ x&170 \end{array}\implies \cfrac{85}{x}=\cfrac{100}{170}\implies \cfrac{85\cdot 170}{100}=x[/tex]

so the retail price is "x", thus the profit will be x - 85.

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