You and your friend each start a car-washing service.
You spend $25 on supplies and charge $10 per car.
Your friend spends $55 on supplies and charges $13 per car.
How many cars do you have to wash to earn the same amount of money as your
friend?

In the diagram, points d and e are marked by drawing arcs of equal size centered at b such that the arcs intersect ba and bc. then, intersecting arcs of equal size are drawn centered at points d and e. point p is located at the intersection of these arcs. based on this construction, m , and m