document.write( "Question 927753: jonathan is 32. jonathan is as twice as old as sandy was when jonathan was as old as sandy. how old is sandy? \n" ); document.write( "

Algebra.Com's Answer #563252 by Edwin McCravy(20056) $\"\"$ $\"About$

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jonathan is 32. jonathan is as twice as old as sandy was when jonathan was as old as sandy. how old is sandy?
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document.write( "Let x = the number of years ago it was when Jonathan was the age Sandy is now.\r\n" );
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document.write( "Therefore J - x = S  and since J = 32,\r\n" );
document.write( "         32 - x = S\r\n" );
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document.write( "Jonathan is now twice as old as Sandy was x years ago, so\r\n" );
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document.write( "         J = 2(S - x)  and since J = 32\r\n" );
document.write( "        32 = 2(S - x)\r\n" );
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document.write( "So we have the system of equations:\r\n" );
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document.write( "solve that system, get x=8, S=24.\r\n" );
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document.write( "Checking:  8 years ago Jonathan was 32-8 or 24.\r\n" );
document.write( "           8 years ago Sandy was 24-8 or 16.\r\n" );
document.write( "           Jonathon, being 32 now, is twice Sand'y age then\r\n" );
document.write( "           which was 16, so it checks.\r\n" );
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document.write( "Edwin

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