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Concept · 4 steps · NESA MA4-RAT-C-01

Solving Problems Involving Ratios

You can already simplify a ratio. Now the useful bit: take a ratio and a real amount, and split it up properly. One little move — find what one part is worth — cracks almost every ratio question you'll ever meet.

1Where it comes fromA bar split into parts. Find what one part is worth first. 2How to do itThe parts method, step by step, with a practice generator. 3Where it gets tricky“a:b” is not “a out of b”, and being handed one share. 4Out in the wildLollies, prize money, scaling a recipe, map scale — and reverse.
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