Question 1157502
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<U>Solution to Problem 1</U>.



<pre>
Let n be the number of students in the class.


Then from the condition, you have this equation


    8n + 4 = 5n + 40.


Now solve it


    8n - 5n = 40 - 4

    3n      = 36

     n      = 36/3 = 12.    <U>ANSWER</U>


<U>Answer</U>.  There are 12 students in the class.
</pre>

Solved.



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