Jada records the birth year of some of her maternal grandparents for a family history project.
| family member |
birth year |
| grandmother |
1952 |
| grandfather |
1948 |
| great-grandmother |
1930 |
| great-grandfather |
1926 |
As of this year, what is the age of each family member? Explain or show your reasoning. Use the standard algorithm at least once.