978-0-908911-36-3
https://www.eton.co.nz/shop/Mathematics+Text+And+Workbooks+Year+1-8/Year+7/New+Zealand+Curriculum+Mathematics+Stage+7+Advanced+Multiplicative+Book+2+Ratios+And+Proportions+And+Algebra.html
New Zealand Curriculum Maths: Stage 7 Advanced Multiplicative Book 2
New Zealand Curriculum Mathematics Stage 7 Book 2
Advanced Multiplicative --- Ratios And Proportions And Algebra