Ratio | OCR GCSE Maths Higher | 40 Worked Examples (J560)

Ratio for OCR GCSE (9-1) Mathematics Higher tier (J560). 40 exam-style questions with fully worked, mark-scheme-annotated solutions: simplifying ratios and unit conversion, the 1:n form, sharing in a ratio (two and three parts), ratio as a fraction of the whole, finding one quantity from another, combining two ratios through a shared quantity, ratios that change, ratio with algebra and equations, recipe and currency scaling, best-value comparisons, and the direct-versus-inverse-proportion distinction. Progressive Easy to Challenging difficulty. Every working line is annotated, with OCR M/A/B marks folded in on the real mark-scheme lines and the M3-M2-M1 partial-credit cascade modelled the way OCR marks it. Calibrated against OCR J560 past papers and mark schemes, not ported from another board. Ideal for revision, homework and 1-1 tuition.