SOLUTION: Dave and Jane Wells have a new rectangular driveway. The perimeter of the driveway is 168 feet. The length is 12 feet longer than three times the width. What are the dimensions of

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Question 481290: Dave and Jane Wells have a new rectangular driveway. 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 jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
2(3w+12)+2w=168
6w+24+2w=168
8w=144
w=18
l=66..