Eddie is 12 years old. His brother is twice as old. If their parents' combined age is 84, what is the combined age of Eddie's family?

To find the combined age of Eddie's family, we first need to determine the ages of Eddie and his brother. Since Eddie is 12 years old, and his brother is twice as old, we calculate his brother’s age to be 12 * 2 = 24 years.

Next, we need to include the parents' total combined age, which is given as 84 years.

Now, we can sum all the ages together:

• Eddie: 12 years

• Brother: 24 years

• Parents: 84 years

The total combined age is calculated as follows:

12 (Eddie) + 24 (Brother) + 84 (Parents) = 120 years.

Therefore, the correct answer is that the combined age of Eddie's family is 120 years, which corresponds to the choice provided. This demonstrates how to sum individual ages along with the parental age to derive a total that reflects the entire family.