The length of a rectangular vegetable garden is 4 feet more than its width. After a 2 foot cement border is placed around the garden, the area of the garden and border is 320 square feet. Find the original width and length of the vegetable garden.
Let's assume the width of the rectangular vegetable garden is "w" feet.
According to the given information, the length of the garden is 4 feet more than its width, so the length can be represented as "w + 4" feet.
After a 2-foot cement border is placed around the garden, the new dimensions of the garden (including the border) will be: Width: w + 2 feet Length: (w + 4) + 2 = w + 6 feet
The area of the garden and border is given as 320 square feet:
Area of the garden and border = (Width + 2) * (Length + 2) = 320
Substitute the values we found: (w + 2) * (w + 6) = 320
Now, let's solve for "w" (the original width of the vegetable garden):
w^2 + 8w + 12 = 320
w^2 + 8w - 308 = 0
To solve this quadratic equation, we can factor it or use the quadratic formula. Factoring, we get:
(w - 14) * (w + 22) = 0
Setting each factor to zero and solving for "w," we get two possible solutions:
w - 14 = 0 --> w = 14 feet (width cannot be negative, so this is the valid solution)
Now that we have the width, we can find the length:
Length = w + 4 = 14 + 4 = 18 feet
So, the original width of the vegetable garden was 14 feet, and the original length was 18 feet.
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