If I cup of milk is added to a 3-cup mixture that is 2/5 flour and 3/5 milk, what percent of the 4-cup mixture is milk?
单选题
2022-06-09 15:56
A、80%
B、75%
C、70%
D、65%
E、60%
查看答案
正确答案
C
试题解析
Since , the original 3-cup mixture contains 9 cups of milk. After 1 cup of milk is added to the 3-cup mixture, the 4-cup mixture contains . Since . 70% of the 4-cup mixture is milk.