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

Algebra ->  Equations -> 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       Log On


   



Question 358353: 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 mananth(16946) About Me  (Show Source):
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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?
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let width be x
length = 3x+12
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perimeter = 2(L+W)
2(x+3x+12)=168
2(4x+12)=168
8x+24=168
8x=168-24
8x=144
/8
x=18 m the width
length = 3x+12= 3*18+12
=54+12
=66 m
66m by 18 m
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