How many bottles of champagne to toast with 100 guests?

For 100 guests, you will need approximately 10 bottles of champagne. This quantity assumes that each guest will have one glass of champagne.

Here's a breakdown:

- A standard bottle of champagne contains 750ml of liquid.

- A champagne flute typically holds 150-180ml of liquid.

Based on these measurements, one bottle of champagne can serve 4-5 glasses.

For 100 guests, you can calculate the number of bottles needed as follows:

Number of bottles = Number of guests / Guests per bottle

Number of bottles = 100 guests / 4 guests per bottle (or 5 guests per bottle)

For 4 guests per bottle: Number of bottles = 100 / 4 = 25 bottles

For 5 guests per bottle: Number of bottles = 100 / 5 = 20 bottles

Since it's not practical to have partial bottles, it's generally recommended to round up the number of bottles to ensure there's enough for everyone. In this case, you would need approximately 10 or 11 bottles of champagne to comfortably serve 100 guests with one glass each.