设要用x元钱,
6:4=x:3,
4x=6×3,
4x=18,
x=4.5;
答:小刚想买3枝同样的圆珠笔,要用4.5元钱.
小明买了4枝圆珠笔用了6元.小刚想买3枝同样的圆珠笔,要用多少钱?(用比例解)
小明买了4枝圆珠笔用了6元.小刚想买3枝同样的圆珠笔,要用多少钱?(用比例解)
数学人气:729 ℃时间:2020-01-27 17:11:12
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