Question

You are having a wedding anniversary party. In attendance are a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law and one daughter-in-law. If every person is eating two burgers, what’s the minimum amount of burgers you will need?

Answer 1

After counting, there are 23 people in attendance.  If each person is eating two burgers:

$23*2=46$

You'll need at least 46 burgers.