第一题:two buckets of the same capacity are filled with flour and sugar.the ratio of the flour to sugar

题目

第一题:two buckets of the same capacity are filled with flour and sugar.the ratio of the flour to sugar in the two buckets are 3:1 and 5:1 respectively.a baker pours the flour and sugar in te two buckets into one large container.find the ratio of flour to sugar in the large container.
第二题:a computer game software marked at$280 is sold at 20%off.if the discount is 35%of its cost price,find the profit percent.
谢
话中带刺耶
不是我在表现好不好 是根本就是英文的数学题

答案

第一题：两个大小相同的容器内的面粉和糖的总重量相同,我们可以设为单位1,因此在第一个容器中的面粉占四分之三,糖占四分之一；同理在第二个容器内面粉占六分之5,糖占6分之1.所以当两者混合后面粉和糖的比为（四分之...