Question

the perimeter of a desk is 54 inches. If the length of the desk is 15 inches what is the width of the desk?

Answer 1

54 inches - 15 inches - 15 inches = 24 inches (length of 2 widths)
24 inches ÷ 2 = 12 inches

Ans: 12 inches

Answer 2

perimeter is 54 cm. length is 15 cm so 2 x 15 =30 . so we are left with 54-30 =24 cm.so 2 x width =24 cm . so the width  is 12 cm