document.write( "Question 976548: Pat is 17 years older than his son Patrick .In five years Pat will be twice as old as Patrick . How old are they now? \n" ); document.write( "

Algebra.Com's Answer #598118 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+a+\"$ = Pat's age now
\n" ); document.write( "Let $\"+b+\"$ = his son's age now
\n" ); document.write( "----------------------------
\n" ); document.write( "(1) $\"+a+=+b+%2B+17+\"$
\n" ); document.write( "(2) $\"+a+%2B+5+=+2%2A%28+b+%2B+5+%29+\"$
\n" ); document.write( "--------------------------
\n" ); document.write( "(2) $\"+a+%2B+5+=+2b+%2B+10+\"$
\n" ); document.write( "(2) $\"+a+-+2b+=+5+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+a+-+b+=+17+\"$
\n" ); document.write( "Subtract (2) from (1)
\n" ); document.write( "---------------------
\n" ); document.write( "(1) $\"+a+-+b+=+17+\"$
\n" ); document.write( "(2) $\"+-a+%2B+2b+=+-5+\"$
\n" ); document.write( "---------------------
\n" ); document.write( " $\"+b+=+12+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+a+=+b+%2B+17+\"$
\n" ); document.write( "(1) $\"+a+=+12+%2B+17+\"$
\n" ); document.write( "(1) $\"+a+=+29+\"$
\n" ); document.write( "---------------
\n" ); document.write( "Pat is 29
\n" ); document.write( "His son is 12
\n" ); document.write( "--------------
\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+a+%2B+5+=+2%2A%28+b+%2B+5+%29+\"$
\n" ); document.write( "(2) $\"+29+%2B+5+=+2%2A%28+12+%2B+5+%29+\"$
\n" ); document.write( "(2) $\"+34+=+2%2A17+\"$
\n" ); document.write( "(2) $\"+34+=+34+\"$
\n" ); document.write( "OK \n" ); document.write( "

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