document.write( "Question 1059292: anthony is 50 years older than his grandson. 20 years ago, anthony was six times as old as his grandson. what are their present ages? \n" ); document.write( "

Algebra.Com's Answer #674352 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+a+\"$ = Anthony's age now
\n" ); document.write( "Let $\"+b+\"$ = his grandson's age now
\n" ); document.write( "-----------------------------------
\n" ); document.write( "(1) $\"+a+=+b+%2B+50+\"$
\n" ); document.write( "(2) $\"+a+-+20+=+6%2A%28+b+-+20+%29+\"$
\n" ); document.write( "------------------------------
\n" ); document.write( "Plug (1) into (2)
\n" ); document.write( "(2) $\"+b+%2B+50+-+20+=+6%2A%28+b+-+20+%29+\"$
\n" ); document.write( "(2) $\"+b+%2B+30+=+6b+-+120+\"$
\n" ); document.write( "(2) $\"+5b+=+150+\"$
\n" ); document.write( "(2) $\"+b+=+30+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+a+=+b+%2B+50+\"$
\n" ); document.write( "(1) $\"+a+=+30+%2B+50+\"$
\n" ); document.write( "(1) $\"+a+=+80+\"$
\n" ); document.write( "-----------------------
\n" ); document.write( "Anthony is 80
\n" ); document.write( "His grandson is 30
\n" ); document.write( "-----------------------
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+a+-+20+=+6%2A%28+b+-+20+%29+\"$
\n" ); document.write( "(2) $\"+80+-+20+=+6%2A%28+30+-+20+%29+\"$
\n" ); document.write( "(2) $\"+60+=+6%2A10+\"$
\n" ); document.write( "(2) $\"+60+=+60+\"$
\n" ); document.write( "OK \n" ); document.write( "

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