document.write( "Question 1167373: If Mary is twice as old as Tom by all but three years and she is seventeen, how old is Tom? \n" ); document.write( "

Algebra.Com's Answer #791968 by josgarithmetic(39620) $\"\"$ $\"About$

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What? \"by all but three years\"?\r
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\n" ); document.write( "\n" ); document.write( "Mary is twice as old as Tom:
\n" ); document.write( " $\"m=2t\"$ \r
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\n" ); document.write( "\n" ); document.write( "Mary is seventeen:
\n" ); document.write( " $\"m=17\"$ \r
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\n" ); document.write( "\n" ); document.write( "Put these two things together.
\n" ); document.write( " $\"2t=17\"$
\n" ); document.write( " $\"t=17%2F2\"$
\n" ); document.write( " $\"t=8%261%2F2\"$ -------------you can do this only if the situation allows for half-year increments. Tom is 8 years 6 months.\r
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\n" ); document.write( "\n" ); document.write( "If you meant or expected something else, then recheck your problem description. \n" ); document.write( "

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