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  3. If a textbook was 15.00dollars last week,how much is it today?

If a textbook was 15.00dollars last week,how much is it today?

admin2012-03-27  57
问题
If a textbook was 15.00dollars last week,how much is it today?
选项 A、10.50dollars.
B、4.50dollars.
C、10.00dollars.
答案A
解析 细节题。All Textbooks一行中只有一个数字：30% off，对应于This Week，即本周教材打七折。题目说上周1本教材15美元，那么本周的价钱就应当是15×(1-30%)=10.50美元，选[A]。
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