Solution: Suppose Xiaoming walks x meters per minute, then Xiaojun rides x+ 130 meters per minute.

According to the meaning and known, there are:

5x+ 10x+ 10(x+ 130)= 2800

5x+ 10x+ 10x+ 1300 = 2800

25x+ 1300=2800

25x= 1500

X = 60m

Xiaoming walks 60 meters every minute.