document.write( "Question 182255: the average of x,y, and z is 80. IF two of the numbers are 74 and 78, then what is the other number? \n" ); document.write( "
Algebra.Com's Answer #136783 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
the average of x,y, and z is 80. IF two of the numbers are 74 and 78, then what is the other number?
\n" ); document.write( "---------------------
\n" ); document.write( "(74 + 78 + z)/3 = 80
\n" ); document.write( "152 + z = 240
\n" ); document.write( "z = 88
\n" ); document.write( "=====================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H
\n" ); document.write( "=====================
\n" ); document.write( "
\n" );