Question

The first row of a section in a stadium has 10 seats. The second row has 11 seats. The third row has 12 seats. This pattern continues and the section has 24 rows.How many seats are in this section?

Answer 1

516 seats

Explanation:

Answer 2

1st row = 10 seats

2nd row = 10 + 1 = 11 seats

3rd row = 10 + 2 = 12 seats

nth row = 10 + (n-1) seats

Find the number of seats in the 24th row:

24th row = 10 + (24 - 1) = 33 seats

Find total number of seats:

Total number of seats =
`(n)/(2) (a_1+a_(24)) = (24)/(2) (10+33)= 516`

Answer: 516 seats