GWD4-22

[Ally]

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
答案給B不知該如何求出?

[micht]

第15高-->前面有14個
第20低-->後面有19個

14+19+1=34

(要把自己加回來所以+1)

[撥撥]

各位大大不好意思
我看不大懂題意
可以教我一下嗎？

謝謝大家∼

[Tinamo]

題意是說,所有的商品賣出的價錢都不同,其中某一項商品的價錢從最高價數下來是排第15位,從最低的價錢數上來是排第20位。

[撥撥]

將子我了解了∼

謝謝Tinamo