method $$1$$：$$Let$$ the income amount be denoted by $$A$$.  We know that $$\frac{A\left( p+.25 \right)}{100}=\frac{28000p}{100}+\frac{\left( p+2 \right)\left( A-28000 \right)}{100}$$  We can now try to solve for $$A$$:  $$\left( p+.25 \right)A=28000p+Ap+2A-28000p-56000$$  $$.25A=2A-56000$$  $$A=32000$$  so the answer is $$\boxed{ \text {B}}$$.  method $$2$$：$$Let$$ $$A$$, $$T$$ be Kristin\textquotesingle s annual income and the income tax total, respectively.  Notice that　  $$T=p\textbackslash\%\cdot 28000+\left( p+2 \right)\textbackslash\%\cdot \left( A-28000 \right)$$  $$\textasciitilde\textasciitilde\textasciitilde\textasciitilde$$$$=\left[ p\textbackslash\%\cdot 28000+p\textbackslash\%\cdot \left( A-28000 \right) \right]+2\textbackslash\%\cdot \left( A-28000 \right)$$  $$\textasciitilde\textasciitilde\textasciitilde\textasciitilde$$$$=p\textbackslash\%\cdot A+2\textbackslash\%\cdot \left( A-28000 \right)$$  We are also given that  $$T=\left( p+0.25 \right)\textbackslash\%\cdot A=p\textbackslash\%\cdot A+0.25\textbackslash\%\cdot A$$  Thus, $$p\textbackslash\%\cdot A+2\textbackslash\%\cdot \left( A-28000 \right)=p\textbackslash\%\cdot A+0.25\textbackslash\%\cdot A$$  $$2\textbackslash\%\cdot \left( A-28000 \right)=0.25\textbackslash\%\cdot A$$  Solve for $$A$$ to obtain $$A=32000$$. $$\boxed{ \text {B}}$$ 
The state income tax where Kristin lives is levied at the rate of $$p\textbackslash\%$$ of the first ＄$$28000$$ of annual income plus $$ \left( {p+2} \right) \textbackslash\%$$ of any amount above ＄$$28000$$. Kristin noticed that the state income tax she paid amounted to $$ \left( {p+0.25} \right) \textbackslash\%$$ of her annual income. What was her annual income? 

a. ＄$$28000$$ 
b. ＄$$32000$$ 
c. ＄$$35000$$ 
d. ＄$$42000$$ 
e. ＄$$56000$$ 