✦Money & Shopping

Which package gives the better price per unit?

Compare two package prices fairly by reducing both to a price per kilogram, litre, item or other shared unit.

Answer with the example values: Package B is cheaper per unit

Formula: A: €6.00 ÷ 750 = €0.0080; B: €8.00 ÷ 1,200 = €0.0067. The difference is €0.0013 per shared unit.

✦Calculate it

Enter your values

Your answerPackage B is cheaper per unitA: €6.00 ÷ 750 = €0.0080; B: €8.00 ÷ 1,200 = €0.0067

The difference is €0.0013 per shared unit.

02Understand it

Why this calculation works

unit price = price ÷ quantity. The calculation above updates with your own values, so the answer is never a disconnected black box.

Worked example

€6 for 750 g is €0.008/g; €8 for 1,200 g is about €0.0067/g, so B is cheaper per gram.

Assumptions and edge cases

  • Both quantities use the same unit.
  • Quality and waste are not compared.

03Practise it

Learn the mathematics

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04Master it

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Questions people ask

Do the package sizes need to match?

No. They only need to use the same unit; division makes the comparison fair.

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