document.write( "Question 585095: Average of 4 numbers is 60. Three numbers are 65,50 and 70. Find the fourth number. \n" ); document.write( "

Algebra.Com's Answer #373100 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+%28+65+%2B+50+%2B+70+%2B+x+%29+%2F+4+=+60+\"$
\n" ); document.write( "Multiply both sides by $\"+4+\"$
\n" ); document.write( " $\"++65+%2B+50+%2B+70+%2B+x++=+240+\"$
\n" ); document.write( " $\"+185+%2B+x+=+240+\"$
\n" ); document.write( " $\"+x+=+55+\"$
\n" ); document.write( "check answer:
\n" ); document.write( " $\"+%28+65+%2B+50+%2B+70+%2B+55+%29+%2F+4+=+60+\"$
\n" ); document.write( " $\"+240%2F4+=+60+\"$
\n" ); document.write( " $\"+240+=+240+\"$
\n" ); document.write( "OK \n" ); document.write( "

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