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Posted by **Anonymous** on Wednesday, September 21, 2011 at 11:47am.

How many rows of chairs are there?

How can this be? Because the first two rows have the same amount of chairs, and no whole number added by itself equals 27. I'm Confused.

- Calculus -
**Steve**, Wednesday, September 21, 2011 at 1:21pmThe first 2 rows *each* have 27 chairs.

What we have here is the fact that each pair of rows of chairs has 3 more per row more than the previous pair.

114-27 = 87 = 3*29.

So, there are 30 pairs of rows. The first pair have 27 chairs each, and the 30th pair have 114 chairs each.

Sounds like 60 rows of chairs.

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