SOLUTION: A piece of poster board has a perimeter of 156 in. If Mika cut 6 in off the width, the length becomes four times the width. What are the dimensions of the poster board?

Question 816147: A piece of poster board has a perimeter of 156 in. If Mika cut 6 in off the width, the length becomes four times the width. What are the dimensions of the poster board?

Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
p = 2L + 2w = 156
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L = 4(w - 6)
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2L + 2w = 156
2(4(w - 6)) + 2w = 156
8w - 48 + 2w = 156
10w = 204
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w = 20.4 in
L = 57.6 in
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