I'm am looking for articles on the chances of getting married for a second time after 40 with a child.
Try starting with the key words:
- "second marriage and age" or "remarriage and age"
- "second marriage and child" or "remarriage and child"
Check the US Census bureau for statistics on marriages http://www.census.gov/
If these sources do not produce results you may need to review your question and broaden your topic. Check with your campus librarian and your instructor for more help.