Country X taxes each of its citizens an amount equal to 10 percent of the first $40,000 of income, plus 20 percent of all income in excess of $40,000. If a citizen of Country X is taxed a total of $8,000, what is her income?
Choose the correct choice from the following answers.
A) $40,000
B) $56,000
C) $60,000
D) $66,667
E) $80,000
Equation is correct, so math must be a problem.   0.10*40,000+0.2*(x-40,000)=8,000 --&gt; 4,000+0.2x-8,000=8,000 --&gt; 0.2x=12,000 --&gt; x=60,000.   Answer: $60,000.
<result>C</result>
Country X taxes each of its citizens an amount equal to 10 percent of the first $40,000 of income, plus 20 percent of all income in excess of $40,000. If a citizen of Country X is taxed a total of $8,000, what is her income?