jasminer 当前离线
高级会员
After paying a 10% tax on all income over $3,000 , a person had a net income of $12,000. What was the income before taxes?
A 13300 B 13000 C 12900 D 10000 E 9000
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xiaoxiugirl 当前离线
金牌会员
12000=x-(x-3000)0.1
x=13000
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