Question 636186
A carpenter used 30 feet of trim to finish three sides of the opening for a garage door. If the side parallel to the ground is 9 feet longer than either side of the two sides, then what are the dimensions of the doorway.
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Let vertical trim be "x" long
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Equation:
x + x + x+9 = 30
3x = 21
x = 7 ft.
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Dimensions: 
7' height
16'wide
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Cheers,
Stan H.