You are not currently logged in. Please create an account or log in to view the full course. Classic View Mathematics GCSE OCR OCR GCSE Mathematics (J560) – Higher 6. Algebra 6.03 Algebraic Equations Classic View 6.03 Algebraic Equations RATIO, PROPORTION, AND RATES OF CHANGE IV – OCR GCSE (J560): HIGHER TIER Growth and Decay 5.03a, 6.03e Dr Thomas Woolley, Cardiff University