Question
Lynn had 21 ℓ of grapefruit juice. She used 12 of the grapefruit juice for a picnic and 37 of the remaining grapefruit juice to bake grapefruit-flavoured biscuits. How much grapefruit juice did she have left? Give your answer in litres.
2 m

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Lynn had 21 ℓ of grapefruit juice. She used 12 of the grapefruit juice for a picnic and 37 of the remaining grapefruit juice to bake grapefruit-flavoured biscuits. How much grapefruit juice did she have left? Give your answer in litres.