PLEASE HELP!
5) In 2019, the US Census determined that 53% of all adult couples were married. It was also determined that 73% of all married couples have children. However, about 25% of all unmarried couples also have children.
a) What percentage of couples do not have children?
b) If you chose a couple at random and found that they do not have any children, what is the probability that they are married?