20% of Americans between the ages of 18 to 29 have one of these, but 76% of people over the age of 65 have one. What is it?Posted on November 8, 2021 at 9:37 am 20% of Americans between the ages of 18 to 29 have one of these, but 76% of people over the age of 65 have one. What is it? Ans: A will.