algebra
posted by peeka .
the length of a rectangular parking lot is 3 meters less than twice its width, and the perimeter is 408 meters, find the length of the parking lot.

the length of a rectangular parking lot is 3 meters less than twice its width
so
L=2W3
and the perimeter is 408
so 2L+2W=408
you have two equations, solve for L and W
I got L=135 meters, but check the working.