7. The product of the ages of James and Susan in 5 years is 230 more than the product of their ages today. What are their ages if James is one year older than Susan?

8. Find the length and width of a rectangle whose length is 4 cm longer than its width and whose area is 60 cm².

9. A park swimming pool is 10 m wide and 25 m long. A pool cover is purchased to cover the pool, overlapping all 4 sides by the same width. If the covered area outside the pool is 74 m², how wide is the overlap area?

10. In a landscape plan, a rectangular flowerbed is designed to be 4 m longer than it is wide. If 60 m² are needed for the plants in the bed, what should the dimensions of the rectangular bed be?

11. If the side of a square is increased by 5 units, the area is 4 times larger than that of the original square. Find the length of the sides of the original square.

12. A rectangular lot is 20 m longer than it is wide and its area is 2400 m². Find the dimensions of the lot.

13. The length of a room is 8 m greater than its width. If both the length and the width are increased by 2 m, the area increases by 60 m². Find the dimensions of the room.​