document.write( "Question 1095028: The average of 4 numbers is 14. If the average of 3 of these numbers is 12, what is the fourth number? \n" ); document.write( "

Algebra.Com's Answer #709565 by josmiceli(19441) $\"\"$ $\"About$

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[ average ] = [ sum of numbers ] / [ how many numbers ]
\n" ); document.write( " $\"+14+=+S%5B1%5D+%2F+4+\"$
\n" ); document.write( " $\"+S%5B1%5D+=+56+\"$
\n" ); document.write( "----------------
\n" ); document.write( "For 3 of the numbers:
\n" ); document.write( " $\"+12+=+S%5B2%5D+%2F+3+\"$
\n" ); document.write( " $\"+S%5B2%5D+=+36+\"$
\n" ); document.write( "------------------
\n" ); document.write( " $\"+S%5B1%5D+-+S%5B2%5D+=+56+-+36+\"$
\n" ); document.write( " $\"+S%5B1%5D+-+S%5B2%5D+=+20+\"$
\n" ); document.write( "The 4th number is 20\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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