1. The race track for car racing consists of three sections: highway, dirt, and mud. The speed of two cars participating in the race is the same on each section of the track, equal to 120, 40, and 10 km/h, respectively. The time started when the red car was on the highway 600 meters ahead of the white car, which at that moment was crossing the starting line at the beginning of the highway section. Find the distance between the cars at the moments when both were on the dirt section of the track. Find the distance between the cars at the moment when they were both on the mud section of the track.
Answer: $s_{1}=200 \mathrm{M}, s_{2}=50 \mathrm{M}$.