Question

A theater can seat 550 people. The number of rows is 3 less than the number of seats in each row. How many rows of seats are there?

Answer 1

The number of rows will be a divisor of 550 such that the quotient is 3 more.

... 550 = 1×550 = 2×275 ≈ 5×110 = 10×55 = 11×50 = 22×25

Factors 22 and 25 differ by 3.

The number of rows of seats is 22.

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The number of seats in a row is 25.