Subject: mathqa
Question: country x taxes each of its citizens an amount equal to 13 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 ?
Option: 
A: $ 64,000
B: $ 80,000
C: $ 56,000
D: $ 54,000
Answer: D