Problema Solution
Traffic signs are regulated by the Manuel on Uniform Traffic Control Devices (MUTCD). The perimeter of some traffic sign must be 80 inches. Also, its length is 8 inches longer than its width. Find the dimensions of this sign.
Answer provided by our tutors
perimeter= 2(width + length), all measurements in inches
let width= x, and so lenght = x +8, perimeter=80
so
80 = 2(x + x + 8) <=> 40=2x + 8
2x = 40 -8 = 32
therefore, width, x = 16inches
length = x +8 = 16 +8 =24inches