问题
单项选择题
| Month | Average Price per Dozen |
| April | $1.26 |
| May | $1.20 |
| June | $1.08 |
as many dozen were sold in April as in May, and twice as many were sold in June as in April, what was the average price per dozen of the eggs sold over the three-month period
答案
参考答案：D
解析： 设4月份的销售打数为x，则5月份销售的打数为[*]，6月份销售的打数为2x，因此这3个月中每打鸡蛋的平均销售价格为：
[*]