Question
Emma combined 4 bottles of the chikoo juice to make chikoo punch for her schoolmates at a party. Each bottle had 400 mℓ of the chikoo juice. After the party, 170 mℓ of chikoo punch was left. How much chikoo punch did her schoolmates drink in mℓ?
4 m

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Emma combined 4 bottles of the chikoo juice to make chikoo punch for her schoolmates at a party. Each bottle had 400 mℓ of the chikoo juice. After the party, 170 mℓ of chikoo punch was left. How much chikoo punch did her schoolmates drink in mℓ?