Question

Jenna and her little sister Annie both have birthdays on the same day and Jenna is 9 years old, and Annie is 7 years old. Jenna was going to double the age of Annie. How many years ago was that?

Answer 1

Jenna was going to double the age of Annie 3 years ago.

Step-by-step explanation:

To determine how many years ago Jenna was going to double the age of Annie, we need to find the difference in their ages when Jenna was 9 years old. Currently, Jenna is 9 years old and Annie is 7 years old, making the age difference 2 years. So, we need to find out when Jenna was 9 years old, how many years ago was Annie 4 years old (half of 8, which would have been her age if Jenna doubled her age)? Since Annie is currently 7, we subtract 4 from 7 to find out how many years ago she was 4 years old. Therefore, Jenna was going to double the age of Annie 3 years ago.