Question

A carpet is laid on floor of a room 8 m by 5 m. There is border of constant width all around the carpet. If the area of the border is 12 m² find its width.

Answer 1

Let the width of the border be x m. 

The length and breadth of the carpet are 8 m and 5 m, respectively

Because the border cannot be wider than the entire carpet, the width of the carpet is 1/2 m i.e., 50 cm.