Question
Gwen poured 34 ℓ of water into a glass. She drank some of it and used 13 ℓ  to water her roses. 14 ℓ of water was then left in the glass. How much water did Gwen drink?
3 m

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Gwen poured 34 ℓ of water into a glass. She drank some of it and used 13 ℓ  to water her roses. 14 ℓ of water was then left in the glass. How much water did Gwen drink?