Two road crews are paving a straight section of highway. The first crew is responsible for paving the eastbound lanes, and the second crew is responsible for paving the westbound lanes. The first crew has already paved 10 kilometers and is paving 4 additional kilometers per day. The second crew has already paved 20 kilometers and is paving 2 additional kilometers per day. When the two groups have paved the same amount of road, how much of the highway will they each have paved?
Write a system of equations, graph them, and type the solution.