Divide the total by the number of people in each family. For example, if there are 10 people total, with 4 people in one family and 6 people in the other family, then one family pays 4/10 of the bill and the other family pays 6/10 of the bill.

Anonymous wrote:

Credit Card Game

+1

For those unfamiliar with this game, each party (or each adult) gives the server a credit card. The server holds them behind his/her back, and picks one. That person pays for dinner.

Love it!

Hold various contests prior to the meal -- arm wrestling, historical trivia, relay races, vogue-off, etc. Any individual who wins in a category gets 3 points. Second place gets 2 points, third place gets 1 point. Divide the total number of points awarded by the total cost of the meal. Add up each family's total number of points and divide it by the cost of the meal. Then multiply that by the number of points each family earned, and that is the number the other family pays.

Credit Card Game

+1

For those unfamiliar with this game, each party (or each adult) gives the server a credit card. The server holds them behind his/her back, and picks one. That person pays for dinner.

If this is a problem, then maybe you all should just pot luck it.