How many 7oz bottles of beer will serve 40 people?

1. Figure out total ounces needed:

* If you want each person to have one 7oz bottle, you'll need 40 people * 7 oz/person = 280 oz of beer.

2. Calculate the number of bottles:

* Divide the total ounces needed by the size of each bottle: 280 oz / 7 oz/bottle = 40 bottles.

Therefore, you will need 40 bottles of beer to serve 40 people.