Question

The length of a rectangular piece of steel in a bridge is 4 meters less than triple the width. The perimeter is 64 meters. Find the length and width

Answer 1

Consider the width as x.
Width = x
Length = 3x-4
2(3x-4)+2(x) = 64
6x-8+2x = 64
8x-8 = 64
8x = 72
x = 9
Width = 9 meters
Length = 23 meters