What is the unknown of the following problem, "A train travels from Chicago to Pittsburg at an average speed of 85 miles per hour while another train travels from Pittsburg to Chicago at an average speed of 60 miles per hour. How much time would pass until they meet?"

First work with stencil one. use a combination of reflections, rotations, and translations to see whether stencil one will overlap with the original pattern. list the sequence of rigid transformations you used in your attempt, noting the type of transformation, the direction, the coordinates, and the displacement in