To calculate how many 2-liter bottles of champagne you would need for a wedding reception with 80 people, where each person is expected to drink 400 ml of champagne, you can follow these steps:
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Calculate the total amount of champagne needed: \[ \text{Total champagne needed} = \text{Number of people} \times \text{Amount per person} \] \[ \text{Total champagne needed} = 80 , \text{people} \times 400 , \text{ml/person} = 32,000 , \text{ml} \]
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Convert milliliters to liters: Since there are 1000 ml in 1 liter: \[ \text{Total champagne needed in liters} = \frac{32,000 , \text{ml}}{1000} = 32 , \text{liters} \]
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Determine how many 2-liter bottles are needed: \[ \text{Number of bottles} = \frac{\text{Total champagne needed in liters}}{\text{Size of one bottle in liters}} \] \[ \text{Number of bottles} = \frac{32 , \text{liters}}{2 , \text{liters/bottle}} = 16 , \text{bottles} \]
So, you would need 16 bottles of 2-liter champagne for your wedding reception with 80 people, assuming each drinks 400 ml.