Question
Mrs Yen bought a 5-litre bottle of vinegar. She used 12 ℓ of the vinegar in March and 15 ℓ in April. How much oil had she left?
3 m

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Mrs Yen bought a 5-litre bottle of vinegar. She used 12 ℓ of the vinegar in March and 15 ℓ in April. How much oil had she left?