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Mathematics 22 Online
OpenStudy (anonymous):

A rectangle has a length that is five times longer than its width. If the perimeter of the rectangle is 12 inches, what is the width?

OpenStudy (ybarrap):

Two pieces of info leads to 2 equations with 2 variables and hence solvable: $$ L=5W\\ P=12=2L+2W $$ P is perimeter, L is length and W is width. Solve for W. Done!

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