Lesson Logic problems - The answer to Problem 4

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<H2>The answer to Problem 4</H2>

Below &nbsp;(after the &nbsp;reminder)&nbsp; is the &nbsp;answer&nbsp; to the &nbsp;Problem 4&nbsp; of the lesson &nbsp;<A HREF = http://www.algebra.com/algebra/homework/word/misc/Some-logic-problems.lesson>Some logic problems</A>&nbsp; (the topic &nbsp;Miscellaneous word problems 
of the section &nbsp;Word problems&nbsp; in this site).

<BLOCKQUOTE>Problem 4 formulation (reminder)

There are &nbsp;25&nbsp; students in the class.
Each student attends a sport class or an art school. &nbsp;Some of students attend both the sport class and the art school.
The number of students attending the sport class is &nbsp;18; &nbsp;the number of students attending the art school is &nbsp;12.
How many of class students attend both the sport class and the art school?</BLOCKQUOTE>

Answer

The number of students attending both the sport class and the art school is equal to &nbsp;5.

<A HREF = http://www.algebra.com/algebra/homework/word/misc/Some-logic-problems.lesson>Back to the original lesson &nbsp;Some logic problems</A>&nbsp; (the topic &nbsp;Miscellaneous word problems&nbsp; of the section &nbsp;Word problems&nbsp; in this site).
<A HREF = http://www.algebra.com/algebra/homework/word/misc/Logic-problems-The-solution-to-Problem-4.lesson>Go to the &nbsp;solution</A>&nbsp; (the topic &nbsp;Miscellaneous word problems&nbsp; of the section &nbsp;Word problems&nbsp; in this site).