Final answer:
To calculate the age of a married couple, subtract each person's birth year from the current year and find the age difference.
Step-by-step explanation:
To calculate the age of a married couple, you need to know both of their birth dates. Subtract the husband's birth year from the current year to find his age.
Subtract the wife's birth year from the current year to find her age.
The age difference between the husband and wife would be the absolute value of the difference between their ages, i.e., the result of subtracting the smaller age from the larger age.