Question

Yara just received a 6% in salary ,or an increase of $3,120 per year. How much per year was she earning befor the raise

Answer 1

her earnings were "x", which incidentally enough is 100%, now, we also know that "x" went up by 6%, which is $3120, thus


`\bf \begin{array}{ccll} amount&\%\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ x&100\\ 3120&6 \end{array}\implies \cfrac{x}{3120}=\cfrac{100}{6}\implies x=\cfrac{3120\cdot 100}{6}`