document.write( "Question 1086318: The average age of a class of 20 students is 15 years and the average age of another class of 30 students is 20 years. Find the average age of the two classes \n" ); document.write( "

Algebra.Com's Answer #700526 by josmiceli(19441) $\"\"$ $\"About$

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[ ave age ] = [ total of the ages ] / [ number of student ]
\n" ); document.write( " $\"+15+=+t%2F20+\"$
\n" ); document.write( " $\"+t+=+300+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+20+=+t%2F30+\"$
\n" ); document.write( " $\"+t+=+600+\"$
\n" ); document.write( "[ ave age ] = [ total of the ages ] / [ number of student ]
\n" ); document.write( " $\"+%28+600+%2B+300+%29+%2F+%28+20+%2B+30+%29+\"$
\n" ); document.write( " $\"+900+%2F+50+\"$
\n" ); document.write( " $\"+18+\"$
\n" ); document.write( "The average age of the 2 classes is 18
\n" ); document.write( " \n" ); document.write( "

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