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The length of a rectangle is five inches more than the width. The perimeter is 50 inches. Find the length and the width.

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Let l be the length of the rectangle and w be the width, since the length is five inches more than the width we can set the following equation:


l=w+5in\text{.}

Also, the perimeter of the rectangle is 50 inches, therefore:


2l+2w=50in\text{.}

Substituting the first equation in the second equation we get:


2(w+5in)+2w=50in\text{.}

Solving for w we get:


\begin{gathered} 2w+10in+2w=50in, \\ 4w=40in, \\ w=10in\text{.} \end{gathered}

Substituting w=10in in the first equation we get:


\begin{gathered} l=10in+5in, \\ l=15in\text{.} \end{gathered}

Answer: The length of the rectangle is 15 inches and the width is 10 inches.

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