A truck driver drives on a highway at a speed of 108 km/h and covers a distance of 160 km. The force of air resistance at this speed is 1350 N. When he drives from the highway to the regional road, he reduces the speed to 70 km/h. The force of air resistance also is reduced to 600 N. How far can he travel on the regional road for the truck's engine to do the same job as on the highway?
