提问gwd4-22

congcongdog

Q22:

At a garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?

A. 33

B. 34

C. 35

D. 36

E. 37

both the 15th highest price and the 20th lowest price among the prices of the items sold 这句话怎么理解啊？谢谢.

katherine8110

哦，这个样子啊！

非常感谢

albertes

At a garage sale, all of the prices of the items sold were different. If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold, how many items were sold at the garage sale?

做不出来是因为没看懂吧？

只要意思就是：出售价格不同的一些商品，卖一个收音机的价格在所有商品的价格里是第十五高，同时是第二十低，问一共有多少商品？不就是把这些东西排队，这个收音机从前边排第15，从后面数排第20，就是15+20-1=34啊。

katherine8110

怎么求出34的？

lxj19820127

If the price of a radio sold at the garage sale was both the 15th highest price and the 20th lowest price among the prices of the items sold

收音机买的钱既是第十五贵的又是第二十便宜的

that means there are 14 higher priced items and 19 lower priced items, so 14 + 1 + 19 = 34