Final answer:
Mike is 22 years old. This is found by subtracting Jennifer's age (49) from the sum of their ages (71).
Step-by-step explanation:
The student's question involves calculating the age of a person named Mike, given the ages of two people, Jennifer and Mike, and their sum. Jennifer is 49 years old, and the sum of both Jennifer's and Mike's ages is 71 years. To find out how old Mike is, we subtract Jennifer's age from the total sum of their ages.
- Sum of both ages: 71
- Jennifer's age: 49
- Mike's age: Sum of both ages - Jennifer's age = 71 - 49
- Therefore, Mike's age: 22 years old