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At a certain online bookstore, the price of each book is the same.The total price of a customer order is the sum of the prices of the books in the order plus a shipping fee that is constant regardless of the number of books purchased. Last year the average (arithmetic mean) number of books per customer order was 1.5, and the average of the total prices of the orders was $10.50. Which of the following amounts could be the book price and the shipping fee last year?
Indicate all such amounts.
Indicate all such amounts.
A,C,D显示答案
· 相关考点
5.2.1 平均值
5.2.1 平均值
以上解析由 考满分老师提供。
