Question

there are 12 rows of seats on a concert hall: 25 seats are in the first row, 27 seats are on the second row, 29 seats are on the third row, and so on. If the price per ticket is $28, how much will be the total sales for a one-night concert if all seats are taken?how many seats are in the 12 row? how many seats are there total? what is the total amount made on that night?

Answer 1

Based on the given information, you have that the number of seats on each row is:

25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47

then, by adding the previous number of seats, you obtain:

25 + 27 + 29 + 31 + 33 +35 + 37 + 39 + 41 + 45 + 47 = 389

- If each ticket costs $28 per seat, the total cost for all seats is:

$28 x 389 = $10,892

- In the 12th row there are 47 seats

- The total number of seat in the 12 rows are 389

- The total amoun made was $10,892