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Question 830603: The perimeter of a rectangle is 24 in and its length us 3 times its width. What are the length and the width of the rectangle ?
Answer by JulietG(1812)   (Show Source):
You can put this solution on YOUR website! A perimeter is a fence. It requires 2 pieces of length and 2 pieces of width. (2L + 2W = P)
You're given the following information:
2L + 2W = 24
L = 3W
.
Replace the value of L in the original equation.
2(3W) + 2W = 24
Multiply
6W + 2W = 24
Add the Ws
8W = 24
Divide each side by 8
W = 3
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Now that you have the width, you can calculate the Length (you were given that length is 3x the width).
L = 3*3, or 9
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Let's plug those values in to make certain.
(2*9) + (2*3) = 24
18 + 6 does indeed equal 24.
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