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GCSE Mathematics · key term
The cost of one unit of a product, such as pounds per kilogram or pence per litre.
Used by AQA, Edexcel and OCR
Specification R1, R5, R11 · Paper 1, Paper 2, Paper 3
The cost of one unit of a product, such as £ per kilogram or pence per 100 ml.
The cost of one unit of a product, such as pounds per kilogram or pence per item.
Specification R1, R11 · Paper 1, Paper 2, Paper 3
The price of one unit of a quantity, such as pounds per kilogram.
Revise: Units and Compound UnitsA unit price makes differently sized packs comparable. Divide each price by its quantity and compare like with like.
The cost for one unit of an item or quantity, such as pounds per kilogram.
Specification 10.01b · Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Foundation), Paper 4 (Higher), Paper 5 (Higher), Paper 6 (Higher)
The cost of one unit of a product, such as the cost per kilogram or per litre.
Revise: Compound MeasuresIf 5 kg costs £7.20, the price is £1.44 per kg, so the second option has the lower unit price. Comparisons must use the same unit: £/kg cannot be compared directly with £/500 g.
In a best-value comparison, calculate the same unit price for every option. The lowest cost per unit is the best value, provided the products are otherwise comparable.
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