Question 366797
Kim has 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 w
3 times width = 3w
12 longer = 3w+12
length = 3w+12
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perimeter = 2*(L+W)
2*(w+3w+12)=168
2*(4w+12)=168
/2
4w+12= 84
-12
4w= 84-12
4w=72
/4
w-18 feet..... the width
length = 3w+12
= 3*18+12
=54+12
=66 feet
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m.ananth@hotmail.ca