Q. ABCD is a quadrilateral, with AB parallel to CD (see figure). Point E is between C and D such that AE represents the height of ABCD, and E is the midpoint of CD. If AB is 4 inches long, AE is 5 inches long, and the area of triangle AED is 12.5 square inches, what is the area of ABCD ? (Note: figure not drawn to scale.)