One seat in an auditorium is broken. It is in the 3rd row from the front of the auditorium and in the 18th row from the back of the auditorium. There are 12 seats to its left and 17 seats to its right. If every row has the same number of seats, what is the total number of seats in that auditorium?

Answer 1

12...x...17
so each row has 30 seats

Now do the same idea to get the number of rows.

Answer 2

600

Answer 3

660

Answer 4

600
because there are 30 rows, There are 12 seats to its left and 17 seats to its right. 12+17+1=30

It is the 3rd row from the front, and 18th row from the back, 3rd row overall, 20=1, 19=2, 18=3... 3 will then be 18! There will be 20 rows in total.

Then, we multiply 20 by 30 and will get 600!