GMAT
题目
A clothing store offers 10% additional discount on the last ticketed price of the clearance items that were on 60% off already.
Quantity A
Final Discount
Quantity B
70%
解析
设X为最终价格，y为初始价格
$X = y × \frac{9}{10} × \frac{4}{10}$
$X = y × \frac{36}{100}$
折扣率 = $100 - 36 = 64\%$
B项 > A项
答案：B
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