Question
Mrs Mark bought nine mugs of pineapple juice. Each mug is 5 ℓ. Her older brother drank 9 ℓ of the pineapple juice. What is the volume of pineapple juice left?
4 m

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Mrs Mark bought nine mugs of pineapple juice. Each mug is 5 ℓ. Her older brother drank 9 ℓ of the pineapple juice. What is the volume of pineapple juice left?