college algebra
posted by corea on .
a rectangular lot whose perimeter is 440 feet is fenced along three sides. an expensive fencing along the lot's length cost $16 per foot, and an inexpensive fencing along the two side widths costs only $11 per foot. The total cost of the fencing along the three sides comes to $4060. What are the lot's dimensions?

if width=x and length=y,
2x+2y = 440
2*11x + 16y = 4060
22x + 16(220x) = 4060
6x = 540
x = 90
y = 130