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MATT:In problems involving proportion you can usesomething ... students who are struggling to gain a passing mark on their maths GCSE. Traditional ratio questions and proportional reasoning ...

MATT: You get different answers. MATT ... are made easy in this handy guide for maths GCSE students from Matt Parker, who breaks down his top five problems with negative numbers.

But would you be able to answer it? It's exam season ... scratcher comes from a 2022 Pearson Edexcel GCSE higher maths paper. It sets out the problem: "Albie is studying the population of rabbits ...