Matt wants to put up a wallpaper boarder for the perimeter of a 12-ft by 15-ft room. The border comes in 6-yd rolls. How many rolls would be needed?

Number of rolls required is 3.

Step-by-step explanation:

Step 1: Find the total perimeter of the room given length and breadth.

Perimeter of the room = 2 (length + breadth) = 2 (12+15) = 2 * 27 = 54 ft

Step 2: Find the equivalent measurement in yards of the room since the rolls come in 6 yards.

Perimeter in yards = 54 * 1/3 = 18 yd

Step 3: Find the number of rolls required.

Number of rolls required = 18/6 = 3 rolls