Caleb and Sergio stacked boxes on a shelf. Caleb lifted 14 boxes and Sergio lifted 12 boxes. The boxes that Sergio lifted each w
eighed 10 lb more than the boxes Caleb lifted. Which expression represents the total number of pounds Sergio lifted? Let c represent the weight of each box Caleb lifted. A. 120c B. c + 10. C.12(c + 10) D. 10(c − 12)
If the weight of the boxes that Caleb lifted is equal to c, then each box that Sergio lifted weighed c + 10. The total number of pounds that Sergio lifted is equal to the product of the number of the boxes and the weight. That is, 12(c + 10) Thus, the answer is letter C.
