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January 30, 2015

January 30, 2015

Posted by **tika** on Tuesday, July 19, 2011 at 9:10pm.

- math -
**Ms. Sue**, Tuesday, July 19, 2011 at 9:18pmI assume you mean the length of the room is 6 feet less than double the WIDTH.

L = 2W - 6

P = 2L + 2W

78 = 2(2W - 6) + 2W

78 = 4W - 12 + 2W

78 + 12 = 6W

90 = 6W

15 = W

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