A theater can seat 725 people. The number of rows is 4 less than the number of seats in each row. How many rows of seats are there?

Question

Valentina Dean

Mathematics

15 May, 10:04

A theater can seat 725 people. The number of rows is 4 less than the number of seats in each row. How many rows of seats are there?

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Answers (1)

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Rylie Suarez · Answer 1

725 is equal to (number of rows) * (number of seats per row)

r = s-4

725 = (s-4) s

s^2-4s-725 = 0

Factoring: (s-29) (s+25) = 0

Thus there are 29 seats per row, and 25 rows.