after paying a 10 percent tax on all income over $ 3000 , a person had a net income of $ 12000 . what was the income before taxes ?	Choose the most appropriate option:
A) $ 13300
B) $ 13000
C) $ 12900
D) $ 10000
E) $ 9000

Rationale: let x be the income over 3000 then ( x - x / 10 ) + 3000 = 12000 = > x = 10000 therefore income before taxes = 10000 + 3000 = 13000 option ( b )
Answer: B