During July, a mail order retailer received 3300 order for amounts less than $100, and 1100 orders for amounts of at least $100. What was the average size of an order in July?
(1) the gross sales from the orders less than $100 equaled the gross sales from the orders greater than $100.
(2) the orders for less than $100 account for a total of $134000in gross sales.
答案是c.
但我认为是E, 因为题目只说了greater than $100的和less than $100的,不知道正好$100的
请各位G友给以指点! 万分感谢!
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发表于 2009-3-20 19:26:00
