The students of Grade Five made flowers of 5 kinds of colors .For each color,there are 20 flowers.
问题描述：
The students of Grade Five made flowers of 5 kinds of colors .For each color,there are 20 flowers.
They used some for decorating （装饰）the classroom and there are 28 left now.How many flowers did they use for the classroom?Answer:（ ）
答
72