题目内容
(请给出正确答案)
[单选题]
已知盐水若干克,第一次加入一定量的水后,盐水浓度为3%;第二次加入同样多的水后,浓度变为2%,那么第三次加入同样多的水后盐水的浓度为()。
A.1.6%
B.1.5%
C.1.2%
D.1%
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A.1.6%
B.1.5%
C.1.2%
D.1%
A.1%
B.1.2%
C.1.5%
D.1.67%
A.1.6%
B.1.5%
C.1.2%
D.1%
A.1%
B.1.2%
C.1.5%
D.1.67%
A.3%
B.2.5%
C.2%
D.1.8%
A.0.03
B.0.025
C.0.02
D.0.018
A.1%
B.2%
C.3%
D.3.5%
A.1%
B.2%
C.3%
D.3.5%
A.12%
B.10%
C.8.3%
D.8%
A.3.4%
B. 2.8%
C. 3.1%
D. 2.3%
A.0.5%
B.1%
C.1.2%
D.1.5%