Solve the problem.
-A rectangular lot whose perimeter is 440 feet is fenced along three sides. An expensive fencing along the lot's length costs $25 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 $5150. What are the lot's dimensions?
A)Length 143 ft; Width 77 ft
B)Length 150 ft; Width 70 ft
C)Length 300 ft; Width 140 ft
D)Length 158 ft; Width 62 ft

Question

Quizplus · Accepted Answer

The perimeter of the rectangle is 2(length + width) = 440 feet. Since only three sides are fenced, we remove one width: 2(length) + width = 440. The cost equation is 25(length) + 10(2*width) = 5150. Solving these equations simultaneously, we find that the length is 150 ft and the width is 70 ft.

Solve the Problem. -A Rectangular Lot Whose Perimeter Is 440 Feet Is Fenced