Question
Mrs Hazel bought a 3-litre bottle of wine. She used 13 ℓ of the wine in May and 16 ℓ in June. How much oil had she left?
3 m

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Mrs Hazel bought a 3-litre bottle of wine. She used 13 ℓ of the wine in May and 16 ℓ in June. How much oil had she left?