SOLUTION: The perimeter of the driveway is 168 feet. The length is 12 feet longer than three times the width. What are the dimensions of the driveway?

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Question 221995: The perimeter of the driveway is 168 feet. The length is 12 feet longer than three times the width. What are the dimensions of the driveway?
Answer by rfer(10417) About Me  (Show Source):
You can put this solution on YOUR website!
P=2w+2l
168=2x+2(3x+12)
168=2x+6x+24
144=8x
x=18 ft
3x+12=66 ft