Question

一道应用题,甲容器盛盐水800克,含盐量是12克;乙容器盛盐水500克,含盐量是25克.乙容器盐水的浓度是甲容器的多少倍

Answer 1

甲浓度=12/800=1.5% 乙浓度=25/500=5%

5%/1.5%=3.33倍

混到一起浓度为

(12+25)/(800+500)=2.85%