The red car is racing against the green car. It's the last couple miles of the race. Let us assume for simplicity that
both cars are now driving at their constant maximum speed for the remainder of the race. The green car was fast
and is 2 miles ahead, but the engine is tired and its speed is down to 25 miles per hour, whereas the red is
catching up with 35 miles per hour. There are still 6 more miles to go for the green car.
1. When will the green car reach the goal?
