CPM Homework Help : CC1MN Problem 9-125

Ms. Jancsi bought a new package of border decoration to put around the bulletin board in her classroom. The package contains $300$ inches of border. The dimensions of the rectangular bulletin board are $8$ feet by $3$ feet. If she puts the border around all four sides of the bulletin board, how much leftover bulletin material will she have? Include a labeled sketch in your answer.

Hint:

Use the following sketch to help you find out how much leftover material Ms. Jancsi will have.

A rectangle with a length of 8 feet and a width of 3 feet.

More Help:

It may be useful to express all the lengths as inches.
$8$ feet is the same as $8$ groups of $12$ inches in each foot, or $8(12) = 96 \text{ inches}$ .
Now, you can change the other side to inches and then find the perimeter of the bulletin board?