A large multiplex movie house has many theaters. The largest theatre has 36 rows. There are 20 seats in the first row. Each row has four seats more than the previous row. How many total seats are there

Rfonn asked Jan 7, 2023

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Rfonn asked Jan 7, 2023

by Rfonn

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27 votes

Answer:

2880 seats

Explanation:

r1 r2 r3 r36

20 + 20+4 + 20+4+4 + ···+20+4×35

total seats = ((20 + 20+4×35)÷2)×36= 2880

Kris Swat answered Jan 11, 2023

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