Question
Mrs Abi bought a 4-litre bottle of vinegar. She used 15 ℓ of the vinegar in April and 12 ℓ in May. How much oil had she left?
3 m

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Mrs Abi bought a 4-litre bottle of vinegar. She used 15 ℓ of the vinegar in April and 12 ℓ in May. How much oil had she left?