1.) Pat and Jen volunteer at the library. Pat can shelve a full cart of books 18 minutes faster than Jen. If they work together, they can shelve a full cart in 40 minutes. How long does it take Jen to shelve a full cart by herself?
2.) Suppose the base and height of a triangle sum to 24 cm, and the area of the triangle is 70 square cm. If the base is larger than the height, what are the dimensions (base and height) of the traingle?