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P = 2l + 2w
l = 2w + 8
P = 136
136 = 2l + 2w
136 = 2(2w+8) + 2w
136 = 4w + 16 + 2w
136 = 6w + 16
120 = 6w
w = 20
l = 2(20) + 8
l = 40 + 8
l = 48

CHECK:
136 = 2l + 2w
136 = 2(48) + 2(20)
136 = 96 + 40
136 = 136

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Q: What is the dimensions of rectangle room is 8ft longer than twice the width the perimeter is 136?
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