SOLUTION: The perimeter is 30 feet,The width is 12, what is the length and how u solve it

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Question 839536: The perimeter is 30 feet,The width is 12, what is the length and how u solve it
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
Placement for the question is "Geometry: Rectangles", so you imply that you want to solve for a rectangle.

Perimeter, sum of lengths making the rectangle.
w for width
y for length
-
Perimeter is 30 feet.
2w%2B2y=30
Let w=12.
2%2A12%2B2y=30.
Solve for y.

Arithmetic Steps
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2%2A12%2B2y=30
2%2A12%2F2%2B2y%2F2=30%2F2
12%2By=15
y=15-12
highlight%28y=3%29