Yuri and Tina sold cookies. Yuri sold 14 boxes while Trina sold n boxes. Together they sold a total of 37 boxes. Which equation represents the number of boxes Trina sold? How many boxes did she sell?

A. n+37=14; Trina sold 23 boxes
B. n-14=37; Trina sold 51 boxes
C. n-37=14; Trina sold 51 boxes
D. n+14=37; Trina sold 23 boxes

The correct equation representing the number of boxes Trina sold is n+14=37. To find the number of boxes Trina sold, we need to solve for n.

n+14=37
n=37-14
n=23

Therefore, Trina sold 23 boxes.

The correct answer is D. n+14=37; Trina sold 23 boxes.