题目内容
(请给出正确答案)
[单选题]
一桶农药,加入一定量的水稀释后,浓度为15%;再加入同样多的水稀释,农药的浓度变为12%;若第三次再加入同样多的水,农药的浓度将变为多少?()
A.8%
B.9%
C.10%
D.11%
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A.8%
B.9%
C.10%
D.11%
A.14%
B.17%
C.16%
D.15%
A.14%
B.17%
C.16%
D.15%
A.0.018
B.0.015
C.0.01
D.0.005
A.8%
B.9%
C.10%
D.11%
A.3.4%
B. 2.8%
C. 3.1%
D. 2.3%
A.0.5%
B. 1%
C. 1.2%
D. 1.5%
A. 13%
B. 12.5%
C. 12%
D. 10%