7. (6 points) Xiao Qing and Xiao Xia start from locations A and B respectively at the same time, and meet for the first time 60 meters from location A. After meeting, they continue to move forward at their original speeds, reach locations A and B respectively, and then immediately return. They meet for the second time 15 meters from location B. The distance between locations A and B is $\qquad$ meters.
【Solution】Solution: According to the problem, we have:
When the two meet for the first time, Xiao Qing has walked 60 meters;
From the first to the second meeting, Xiao Qing has walked: $60 \times 2=120$ (meters);
Xiao Qing has walked in total: $60+120=180$ (meters);
The distance between A and B is: $180-15=165$ (meters).
Answer: The distance between A and B is 165 meters.
Therefore, the answer is: 165.