Question: The rug is 5 feet wider than the chair. The couch is 2 feet longer than twice the width of the rug. If the chair is 3 feet wide. How many feet long is the couch?
What is the solution?
Answer: 
Chair = 3 feet
Rug = 3 + 5 = 8 feet
Couch = 2 * 8 + 2 = 18 feet
The couch is 18 feet long.