OCR GCSE Mathematics · J560
Specification 5.02a · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
Revise: Simple Direct Proportion and CurrencyA ratio table, a scale factor, the unitary method and an equality of ratios all describe the same constant multiplicative relationship. Choose the method that makes the numbers easiest.