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85问答库 > 有AB两桶油共重45千克。把A油的1⼀4倒入B后，这时A油重是B的1⼀2。个有多少

有AB两桶油共重45千克。把A油的1⼀4倒入B后，这时A油重是B的1⼀2。个有多少

能用方程的要用要用一个X的方程

2025-03-21 15:27:43

推荐回答（2个）

回答1：

设：A重为X千克
据题可得
X- 1/4 X
————————===1/2
45-X+1/4 X
得X=20
所以A为20千克

回答2：

设A为X，B为45－X，则有2（X－X＊1／4）＝45－X＋X＊1／4，解得X，45－X就分别为A，B的油量拉．

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