James and Jennifer each improved their yards by planting daylilies and ornamental grass. They bought their supplies from the same store. James spent $136 on 14 daylilies and 8 bunches of ornamental grass. Jennifer spent $160 on 10 daylilies and 12 bunches of ornamental grass. Find the cost of one daylily and the cost of one bunch of ornamental grass. Show the system of equations used