SOLUTION: A room contains 54 chairs. The number of rows is 3 less that the number of chairs per row. Find the number of rows.

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Question 1129589: A room contains 54 chairs. The number of rows is 3 less that the number of chairs per row. Find the number of rows.
Answer by stanbon(75887) About Me  (Show Source):
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A room contains 54 chairs. The number of rows is 3 less that the number of chairs per row. Find the number of rows.
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# of rows = (# of chairs per row) - 3
r = c/r - 3
r = 54/r -3
r^2 + 3r -54 = 0
(r+9)(r-6) = 0
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Positive solution:: # of rows = 6
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Cheers,
Stan H.
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