Answer:
![12(c+10)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/gq11zcsrmthjb22zj48gu49eygl7of6r6z.png)
Explanation:
1. You have the following information given in the problem above:
- Sergio lifted a total of 12 boxes.
- The weight of each box that Sergio lifted was 10 pounds more than the boxes Caleb lifted (
).
2. Therefore, based on the information shown above, you can express the total number of pounds Sergio lifted, as following: