The perimeter of the top of a desk is 54 inches. if the length of the desk is 15 inches, what is the width of the desk?

You are given the perimeter of the desk which is 54 inches. Also, you are given the length of the disk with a value of 15 inches. You are required to solve for its width. The top of a desk is assumed to be rectangular since the problem asks for its width. The equation of the perimeter of a rectangle is P=2L+2W. Let us designate the values for P=54 inches and L=15 inches. Plugging in the values to the equation;
P=2L+2W
54 inches = 2(15 inches) + 2W
54 = 30+2W
54-30 = 2W
2W = 24
W=24/2
W= 12 inches
Therefore, the width of the top desk is 12 inches.