Question
Mrs Gabby bought a 2-litre bottle of oil. She used 13 ℓ of the oil in February and 19 ℓ in March. How much oil had she left?
3 m

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Mrs Gabby bought a 2-litre bottle of oil. She used 13 ℓ of the oil in February and 19 ℓ in March. How much oil had she left?