Question
Mrs Mary bought a 4-litre bottle of detergent. She used 25 ℓ of the detergent in March and 12 ℓ in April. How much oil had she left?
3 m

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Mrs Mary bought a 4-litre bottle of detergent. She used 25 ℓ of the detergent in March and 12 ℓ in April. How much oil had she left?