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A rectangular garden has a length that is 3 meters more than twice its width. If the perimeter is 54 meters what are the dimensions of the garden?
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Let w = width. Then length = 2w + 3.
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Perimeter = 2(length + width) = 54
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Substitute: 2((2w + 3) + w) = 54
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Simplify: 2(3w + 3) = 54 → 6w + 6 = 54
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Solve: 6w = 48 → w = 8
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Length = 2(8) + 3 = 19
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The dimensions are 8 meters (width) and 19 meters (length).
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#### 8 meters by 19 meters
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A train leaves Station A traveling at 60 km/h. Two hours later a faster train leaves Station A along the same route at 90 km/h. How far from Station A does the faster train catch up?
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Let t be the time (in hours) the faster train travels when it catches up.
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Distance traveled by first train: 60(t + 2)
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