Question

A bookcase is to have four shelves, including the top. The height of the bookcase is to be 2 feet more than the width and only 20 feet of lumber is available. Use an equation to determine the width and height of the bookcase.

Answer 1

Height and width are 2 feet, 4 feet

Explanation:

Answer 2

4(x+2)+2x=206x+8=206x=12x=2 feet
The height of the bookcase is x=2
The width of the bookcase is x+2=2+24 feet
Height and width are 2 feet, 4 feet