Let me tell you something.

Hee hee:

Because they set out at the same time and spent the same time meeting, their walking distance is directly proportional to their speed.

The ratio of distance is equal to the ratio of speed when walking.

Divide the distance between the two places into 6+7 = 13.

Xiaojun left seven copies.

(70+60) × 9 = 1 170 (m)

This will do.

Looks like you've finished. it is

But for the sake of telling you so hard.

Accept my answer.

Exactly! Quality assurance!