小红用零花钱给山区小朋友买了0.6元和.0.3元一块的水果糖共32块,一共花了13.2元.这俩种水果糖各买了多少块?
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/03 23:14:41
![小红用零花钱给山区小朋友买了0.6元和.0.3元一块的水果糖共32块,一共花了13.2元.这俩种水果糖各买了多少块?](/uploads/image/z/3611833-25-3.jpg?t=%E5%B0%8F%E7%BA%A2%E7%94%A8%E9%9B%B6%E8%8A%B1%E9%92%B1%E7%BB%99%E5%B1%B1%E5%8C%BA%E5%B0%8F%E6%9C%8B%E5%8F%8B%E4%B9%B0%E4%BA%860.6%E5%85%83%E5%92%8C.0.3%E5%85%83%E4%B8%80%E5%9D%97%E7%9A%84%E6%B0%B4%E6%9E%9C%E7%B3%96%E5%85%B132%E5%9D%97%2C%E4%B8%80%E5%85%B1%E8%8A%B1%E4%BA%8613.2%E5%85%83.%E8%BF%99%E4%BF%A9%E7%A7%8D%E6%B0%B4%E6%9E%9C%E7%B3%96%E5%90%84%E4%B9%B0%E4%BA%86%E5%A4%9A%E5%B0%91%E5%9D%97%3F)
小红用零花钱给山区小朋友买了0.6元和.0.3元一块的水果糖共32块,一共花了13.2元.这俩种水果糖各买了多少块?
小红用零花钱给山区小朋友买了0.6元和.0.3元一块的水果糖共32块,一共花了13.2元.这俩种水果糖各买了多少块?
小红用零花钱给山区小朋友买了0.6元和.0.3元一块的水果糖共32块,一共花了13.2元.这俩种水果糖各买了多少块?
设0.6元的水果糖买了x块,0.3元的水果糖买了(32-x)块
根据题意,得:0.6x+0.3(32-x)=13.2
解之,得:x=12
32-x=20
答:0.6元的水果糖买了12块,0.3元的水果糖买了20块.