Let the distance between Party A and Party B be x kilometers, and the inequality group can be obtained as follows:

x ≤( 17.2- 10)÷ 1.2+5

X & gt( 17.2- 10)÷ 1.2+5- 1

Solution: 10

So from A to B, it exceeds 10 km but does not exceed 1 1 km.

Xiaoming 10km fare:1.2 (10-5)+10 =16 yuan.

So I paid a small fare.