Question 818108
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There is much more elegant solution which allows to avoid boring calculations and solve the problem MENTALLY.


<pre>
    Let "m" be an unknown number which is 4 more than the number of rows: m = rows +4.


    Then "m" is 4 less then the number of seats in a row: m = seats - 4.


    The product seats*rows is 1505, or   (m+4)*(m-4) = 1505.


    Hence,  {{{m^2}}} = 1505 + 16 = 1521,  and  m = {{{sqrt(1521)}}} = 39.


    Then the number of rows is  m-4 = 39-4 = 35  and the number of seats in each row is  m+4 = 39+4 = 43.
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