document.write( "Question 1047550: The balcony of a theater has 12 rows of seats. The last row contains 8 seats, and each of the other rows contains one more seat than the rows behind it. How many seats are there in the balcony? \n" ); document.write( "
Algebra.Com's Answer #663114 by jorel555(1290)\"\" \"About 
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If the last row contains 8 seats, then the row directly in front has 9 seats; the next row has ten, and so on. So:
\n" ); document.write( "8+9+10+.....+19=162 seats in the balcony.
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