SOLUTION: The length of a rectangle is 4 times the width. The perimeter of the rectangle is 45 inches. What is the area of the rectangle. Use system of equation to solve the question. I need

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Question 940119: The length of a rectangle is 4 times the width. The perimeter of the rectangle is 45 inches. What is the area of the rectangle. Use system of equation to solve the question. I need help finding the two equation so that i could go further and solve it. thank you.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The length of a rectangle is 4 times the width. The perimeter of the rectangle is 45 inches. What is the area of the rectangle. Use system of equation to solve the question.
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width:: w
length = 4w
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Perimeter = 2(length + width)
45 = 2(4w+w)
2*5w = 45
2w = 9
w = 4.5 (width)
4w = 18 (length)
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Ans: Area = width*length = 4.5*18 = 81 sq in
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Cheers,
Stan H.
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