问题
单项选择题
A shipment of banners contains banners of two different shapes, triangular and square, and two different colors, red and green. In a particular shipment 26%of the banners are square and 35% of the banners are red. If 60% of the red banners in the shipment are square, what is the ratio of red triangular banners to green triangular banners ?()
A.A
B.B
C.C
D.D
E.E
答案
参考答案:C
解析:
此题可以通过列表的方法进行解答,如下所示:
图中的黑体字是题目中的已知条件,总数当然是100%,表格中的①,②,③,④表示计算这些数据的先后顺序,其中②由60%乘以35%得到,从表中很容易求出红色三角形旗帜与绿色三角形旗帜的比是[*]。