Your question is Selecting Best Tractor Plan. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
There are multiple instances of Tractor objects with battery life and (x,y) position; they must travel to point A and then to point B, and speed and battery drain rate are given constants; select the best tractor for this job considering battery life and travel time.