问题
单项选择题
Last year’s receipts from the sale of greeting cards during the week before Mother’s Day totaled $189 million, which represented 9 percent of total greeting card sales for the year. Total greeting card sales for the year totaled how many million dollars ？（）
A. 17,010
B. 2,100
C. 1,890
D. 1,701
E. 210
答案
参考答案：B
解析：
If 189 million=9 percent of the total, then 189/9=21 million=1% of the total, and therefore the total sales were 21 million x 100=2,100 million.
