Planes a and b intersect. vertical plane b intersections horizontal plane a at line k. line k contains points y and z. line m intersects line n at point w. which describes the intersection of line m and line n

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable