document.write( "Question 1126712: tony is 5 years younger than marvin's age 1 year from now. 6 years ago tony was half as old as marvin was then. how old is tony now? \n" ); document.write( "

Algebra.Com's Answer #743073 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+a+\"$ = Tony's age now
\n" ); document.write( "Let $\"+b+\"$ = Marvin's age now
\n" ); document.write( "------------------------------------
\n" ); document.write( "(1) $\"+a+=+%28+b+%2B+1+%29+-+5+\"$
\n" ); document.write( "(2) $\"+a+-+6+=+%281%2F2%29%2A%28+b+-+6+%29+\"$
\n" ); document.write( "------------------------------------
\n" ); document.write( "(1) $\"+a+-+b+=+-4+\"$
\n" ); document.write( "(2) $\"+2a+-+12+=+b+-+6+\"$
\n" ); document.write( "(2) $\"+2a+-+b+=+6+\"$
\n" ); document.write( "subtract (1) from (2)
\n" ); document.write( "----------------------------
\n" ); document.write( "(2) $\"+2a+-+b+=+6+\"$
\n" ); document.write( "(1) $\"+-a+%2B+b+=+4+\"$
\n" ); document.write( "---------------------------
\n" ); document.write( " $\"+a+=+10+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+10+-+b+=+-4+\"$
\n" ); document.write( "(1) $\"+b+=+14+\"$
\n" ); document.write( "---------------------
\n" ); document.write( "Tony is 10
\n" ); document.write( "Marvin is 14
\n" ); document.write( "-----------------
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+a+-+6+=+%281%2F2%29%2A%28+b+-+6+%29+\"$
\n" ); document.write( "(2) $\"+4+=+%281%2F2%29%2A8+\"$
\n" ); document.write( "(2) $\"+4+=+4+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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