Question

A cinema has a total of 63 seats in a rectangular grid. It currently has 9 rows, each with an equal number of seats. How many total seats will it have if it adds two seats per row?

Answer 1

Answer:

77 seats in total

Step-by-step explanation:

7 rows of 9 so you add 2 more seats per row so you are adding 14 seat in total so 63 + 14

Answer 2

Answer:

81 seats.

Step-by-step explanation:

Each of the current 9 rows have 63 / 9 = 7 seats.

So  adding 2 to each row gives 9 seats per row.

Therefore the new total number of seats = 9*9 = 81.