2012PP-II-12 Posted on 16-06-2021 By app.cch No Comments on 2012PP-II-12 Ans: A(α+β):(3α−β)=7:3α+β3α−β=733α+3β=21α−7β−18α=−10βαβ=59α:β=5:9 Same Topic: 2012-II-09 2012PP-I-12 2018-I-09 2021-II-11 2012PP, HKDSE-MATH, Paper 2 Tags:Rate and Ratio