document.write( "Question 758125: The average age of a class of 30 students is 12 years. The average age of 5 students is 10 years. The average age of another group of 5 students is 14 years. What will be the average of remaining students of the class?\r
\n" ); document.write( "\n" ); document.write( "Pls give answer with detail calculations. \r
\n" ); document.write( "\n" ); document.write( "Pls examplify the same.
\n" ); document.write( "

Algebra.Com's Answer #461248 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
the definition of average is:
\n" ); document.write( "( total value of \"+n+\" items ) / \"n+\" = average value of \"+n+\" items
\n" ); document.write( "given:
\n" ); document.write( "( sum of ages ) / 30 = 12
\n" ); document.write( "Sum of ages = 360
\n" ); document.write( "-----------------
\n" ); document.write( "5 of the 30 students average 10 yrs old
\n" ); document.write( "( sum of ages of this group ) / 5 = 10
\n" ); document.write( "sum of ages of this group = 50
\n" ); document.write( "----------------
\n" ); document.write( "another group of 5 of the 30 students
\n" ); document.write( "average 14 yrs old
\n" ); document.write( "( sum of ages of this group ) / 5 = 14
\n" ); document.write( "sum of ages of this group = 70
\n" ); document.write( "------------------
\n" ); document.write( "There are 30 - ( 5 + 5 ) = 20
\n" ); document.write( "students remaining
\n" ); document.write( "-----------------
\n" ); document.write( "For the remaining students:
\n" ); document.write( "\"+%28+360+-+%28+50+%2B+70+%29+%29+%2F+20+\"
\n" ); document.write( "\"+%28+360+-+120+%29+%2F+20+\"
\n" ); document.write( "\"+240+%2F+20+=+12+\"
\n" ); document.write( "The average age of remaining students is 12 yrs old\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );