The question means x/80+5=x/60-3.

X/60-x/80=5+3。

That is, (1/60- 1/80)x=8.

That is, x/240=8

The solution is x= 1920.

A: The distance from school to the playground is 1920 meters.

2. Solution: Let the price of this commodity be X yuan.

The question means 0.75x+25=0.9x-20.

Get 0.9x-0.75x=25+20.

That is 0. 15x=45.

The solution is x=300.

The price of this commodity is 300 yuan.