Question
Mrs Opal bought a 5-litre bottle of wine. She used 49 ℓ of the wine in April and 13 ℓ in May. How much oil had she left?
3 m

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Mrs Opal bought a 5-litre bottle of wine. She used 49 ℓ of the wine in April and 13 ℓ in May. How much oil had she left?