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

Question 404555: Dave and Jane Wells have a new rectangle driveway. The perimeter of the driveway is 168 feet. The length is 12 feet longer then three times the width. What are the dimensions of the driveway?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Dave and Jane Wells have a new rectangle driveway. The perimeter of the driveway is 168 feet. The length is 12 feet longer then three times the width. What are the dimensions of the driveway?
.
Let w = width
then
3w+12 = length
.
2(w + 3w+12) = 168
2(4w+12) = 168
(4w+12) = 84
4w = 72
w = 13 feet (width)
.
Length:
3w+12 = 3(13)+12 = 39+12 = 51 feet

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