Solution: 1) suppose that the speed of the plane is x kilometers per hour in the absence of wind.

2.8*(x+24)=3*(x-24)

2.8 times +67.2=3x-72

0.2x= 139.2

x=696

A: When there is no wind, the speed of the plane is 696 kilometers per hour.

2)

Range = speed * time

When there is no wind, the speed is 696 kilometers per hour.

Distance between the two places: 3 * (696-24) = 20 16km.

A: The distance between the two places is 20 16km.