Posted by De'andre on Friday, January 20, 2012 at 3:26am.
the perimeter of some traffic sign must be 150 inches also its length is 15 inches longer than its width, find the dimensions of this sign

math  Reiny, Friday, January 20, 2012 at 10:08am
You don't say what shape your traffic sign is.
e.g.
a stop sign is a regular octogaon, yours can't be that
a yield sign is an equilateral triangle, not yours
etc. 
math  Steve, Friday, January 20, 2012 at 10:59am
however, since you mention only length and width, let's assume a rectangle.
2(w+(w+15)) = 150
4w + 30 = 150
w = 30
the sign is 30x45