document.write( "Question 1064757: joe's father is four times as old is Joe six years from now Joe's father will be three times as old is Joe how old is each \n" ); document.write( "

Algebra.Com's Answer #679931 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+a+\"$ = Joe's age now
\n" ); document.write( "Let $\"+b+\"$ = his father's age now
\n" ); document.write( "-------------------------------
\n" ); document.write( "(1) $\"+b+=+4a+\"$
\n" ); document.write( "(2) $\"+b+%2B+6+=+3%2A%28+a+%2B+6+%29+\"$
\n" ); document.write( "--------------------------
\n" ); document.write( "(2) $\"+b+%2B+6+=+3a+%2B+18+\"$
\n" ); document.write( "(2) $\"+-3a+%2B+b+=+12+\"$
\n" ); document.write( "Substitute (1) into (2)
\n" ); document.write( "(2) $\"+-3a+%2B+4a+=+12+\"$
\n" ); document.write( "(2) $\"+a+=+12+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+b+=+4a+\"$
\n" ); document.write( "(1) $\"+b+=+4%2A12+\"$
\n" ); document.write( "(1) $\"+b+=+48+\"$
\n" ); document.write( "-------------------
\n" ); document.write( "Joe is 12
\n" ); document.write( "His father is 48
\n" ); document.write( " \n" ); document.write( "

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