# P=2w+2L. if the length is three times as long as the width, and the perimeter is 80 meters, what is the length and the width?

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#### Explanation

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#### Explanation:

I want someone to double check my answer

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Gió Share
Feb 9, 2018

I tried this:

#### Explanation:

We can write that:

$L = 3 w$

into the perimeter:

$2 \cdot 3 w + 2 w = 80$
$8 w = 80$
$w = \frac{80}{8} = 10 m$

so that:

$L = 3 \cdot 10 = 30 m$

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