Question

The center section of a theater has 10 rows. There are 41 seats in row 10, 38 seats in row 9, 35 seats in row 8, and so on. How many seats are in row 1?

Answer 1

14 seats in row 1.

Explanation:

We must calculate how many seats there are for row 1, for that we are going to see the behavior that it takes from row 10 to 8, like this:

row 10 there are 41 and in row 9 there are 38, the difference would be:

41 - 38 = 3

now in row 9 there are 38 and in row 8 there are 35, therefore the difference would be:

38 - 35 = 3

Therefore, we can assume that each row less, there are 3 seats less, therefore:

41 - (10-r) * 3

where r would be the row, therefore if it is row 1 it would be:

41 - (10-1) * 3 = 14

Therefore there are 14 seats in row 1.