Question
Owen drank 12 of the distilled water in his distilled water bottle. He accidentally spilled 35 of the remaining distilled water. As a result, he had 40 mℓ of distilled water left in his distilled water bottle. How much distilled water did Owen have at first? Give your answer in mℓ.
4 m

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Owen drank 12 of the distilled water in his distilled water bottle. He accidentally spilled 35 of the remaining distilled water. As a result, he had 40 mℓ of distilled water left in his distilled water bottle. How much distilled water did Owen have at first? Give your answer in mℓ.