Solve Problems Using Systems of Linear Equations
-A Rectangular Lot $\$ 21$

question 46

Multiple Choice

Solve Problems Using Systems of Linear Equations
-A rectangular lot whose perimeter is 400 feet is fenced along three sides. An expensive fencing along the lot's length costs $\$ 21$ per foot, and an inexpensive fencing along the two side widths costs only $\$ 10$ per foot. The total cost of the fencing along the three sides comes to $\$ 4140$ . What are the lot's dimensions?

• A) Length \(140 \mathrm { ft }\); Width \(60 \mathrm { ft }\)
• B) Length \(143 \mathrm { ft }\); Width \(57 \mathrm { ft }\)
• C) Length \(135 \mathrm { ft }\); Width \(65 \mathrm { ft }\)
• D) Length \(280 \mathrm { ft }\); Width \(120 \mathrm { ft }\)

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