Question 890299
56 students enrolled in the school, making a new total of 704 students.
<pre>
Therefore, before those 56 students enrolled, there were 704-56 = 648 students. 

Let N = the number of classrooms

Before those 56 enrolled,</pre>there was an average of 27 students in each classroom<pre>Therefore

{{{648/N}}}{{{""=""}}}{{{27}}}

Multiply both sides of the equation by N

{{{648}}}{{{""=""}}}{{{27N}}}

Divide both sides of the equation by 27

{{{24}}}{{{""=""}}}{{{N}}}

There were 24 classrooms.

Edwin</pre>