Traffic signs are regulated by the manual on uniform traffic control devices (MUTCD). The perimeter of some traffic sign must be 122 inches. Also its lenght is 11 inches longer than its width. Find the dimensions of this sign.

Solution:

The length: x + 11

The width : x

The perimeter = 2(x+ x+11)= 122

x= 25

So

The length: 36 inches

The width : 25 inches