An auditorium has 40 rows of seats. There are 10 seats in the first row, 90 seats in the 11th row. How many seats are there in the 21st row?

asked Oct 25, 2022 46.3k views

8 votes

An auditorium has 40 rows of seats. There are 10 seats in the first

row, 90 seats in the 11th row. How many seats are there in the 21st
row?

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6 votes

1890 seats in the 21st row

Nlloyd answered Oct 29, 2022

6.1k points

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