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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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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?

User BingeBoy
by
8.4k points

1 Answer

6 votes
1890 seats in the 21st row
User Nlloyd
by
8.3k points
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