Subsequent 82511

The theater has 20 rows of seats on the ground floor. There are 16 seats in the first row, and each subsequent row has two more seats than the previous one. Find the number of seats on the ground floor of the theater.

Correct answer:

x =  700

Step-by-step explanation:

a1=16 d=2 n=20  a20=a1+(n1) d=16+(201) 2=54  s20=2a1+a20 n=216+54 20=700  x=s20=700



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