SOLUTION: an amphitheater has 23 seats in the front row, 25 in the second, 27 in the third, and so on, for 24 rows how many seats are in the amphitheater?

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Question 1138236: an amphitheater has 23 seats in the front row, 25 in the second, 27 in the third, and so on, for 24 rows
how many seats are in the amphitheater?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
A%5Bn%5D=23%2B2%28n-1%29

Sum from n =1 to n=24.

system%28A%5B1%5D=23%2CA%5B24%5D=69%29

%2824%2F2%29%2823%2B69%29

12%2A92

1104

Answer by MathTherapy(10551) About Me  (Show Source):
You can put this solution on YOUR website!

an amphitheater has 23 seats in the front row, 25 in the second, 27 in the third, and so on, for 24 rows
how many seats are in the amphitheater?
Sum of an A.P.: matrix%281%2C3%2C+S%5Bn%5D%2C+%22=%22%2C+%28n%2F2%29%282a1+%2B+%28n+-+1%29d%29%29

Sum of THIS A.P.:  

ACCEPT no other answer.