Question
a rectangular lot whose perimeter is 1600 feet is fenced on three sides. An expensive fencing along the lot's length cost $20 per foot, and an inexpensive fencing along the two side widths costs $5 per foot. The total cost of fencing along the three sides comes to $13000. What are the lot's dimensions?
Answers
s = side length
x = long length
2 s + x = 1600 so x = (1600-2s)
2 s (5) + x (20) = 13,000
10 s + 20 (1600-2s) = 13,000
x = long length
2 s + x = 1600 so x = (1600-2s)
2 s (5) + x (20) = 13,000
10 s + 20 (1600-2s) = 13,000
S= 1900/3
X= 1600-(1900/3)
X= 1600-(1900/3)
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