document.write( "Question 1206462: Grandpa and his grandson Gary both had their birthday yesterday. Today, grandpa's age in years is an even number and 15 times that of Gary. In 4 years time Grandpa's age in years will be the square of Gary's age in years. How many years older than Gary is grandpa today? \n" ); document.write( "
Algebra.Com's Answer #843970 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
\"system%28v=15j%2Cv%2B4=%28j%2B4%29%5E2%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"15j%2B4=%28j%2B4%29%5E2\"\r
\n" ); document.write( "\n" ); document.write( "\"15j%2B4=j%5E2%2B8j%2B16\"\r
\n" ); document.write( "\n" ); document.write( "\"j%5E2-7j%2B12=0\"\r
\n" ); document.write( "\n" ); document.write( "\"%28j-3%29%28j-4%29=0\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"j=3\"------?\r
\n" ); document.write( "\n" ); document.write( "------------------------------------------
\n" ); document.write( "If \"j=3\", then \"v=45\"\r
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\n" ); document.write( "\n" ); document.write( "\"j=4\"------?\r
\n" ); document.write( "\n" ); document.write( "If \"highlight%28j=4%29\" then \"highlight%28v=60%29\".
\n" ); document.write( "-------------------------------------------\r
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\n" ); document.write( "\n" ); document.write( "Can those both work?
\n" ); document.write( "45+4=(3+4)^2
\n" ); document.write( "49=49
\n" ); document.write( "\"cross%28ok%29\"
\n" ); document.write( "-
\n" ); document.write( "60+4=(4+4)^2
\n" ); document.write( "64=8^2
\n" ); document.write( "64=64\r
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\n" ); document.write( "\n" ); document.write( "Both seem to work.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "You can look for the asked-for difference in ages.
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