The formula for the perimeter of a rectangle is P = 2(L + W). If the perimeter (P) is 60 inches and the length (L) is 18 inches, what is the width (W) of the rectangle?
✓ Correct Answer: Option B
Substitute P=60 and L=18 into the formula: 60 = 2(18 + W). Divide by 2 to get 30 = 18 + W. Subtract 18: W = 30 - 18 = 12 inches.