document.write( "Question 738212: The average age of a family of 6 members is 25 years. The average age of the family after a 45 years-old member leaves is
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Algebra.Com's Answer #450731 by Edwin McCravy(20056)\"\" \"About 
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The average age of a family of 6 members is 25 years. The average age of the family after a 45 years-old member leaves is
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document.write( "Suppose the family consists of\r\n" );
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document.write( "Father who is 45\r\n" );
document.write( "Mother who is 44\r\n" );
document.write( "Jackie who is 19\r\n" );
document.write( "Aaron  who is 17 \r\n" );
document.write( "Bill   who is 15\r\n" );
document.write( "Sarah  who is 10\r\n" );
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document.write( "Let's get their average age\r\n" );
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document.write( "45+44+19+17+15+10 = 150\r\n" );
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document.write( "Then 150 divided by 6 is 25.\r\n" );
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document.write( "So their average age is 25.\r\n" );
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document.write( "Now suppose the Father leaves.\r\n" );
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document.write( "Then there are only these 5 people left:\r\n" );
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document.write( "Mother who is 44\r\n" );
document.write( "Jackie who is 19\r\n" );
document.write( "Aaron  who is 17 \r\n" );
document.write( "Bill   who is 15\r\n" );
document.write( "Sarah  who is 10\r\n" );
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document.write( "Now let's get their average age\r\n" );
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document.write( "44+19+17+15+10 = 105\r\n" );
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document.write( "Then 105 divided by 5 is 21.\r\n" );
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document.write( "So their average age is 21.\r\n" );
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document.write( "That's the correct answer.  But there is a way to do the\r\n" );
document.write( "problem without haveing to list the individual people and\r\n" );
document.write( "their ages.  See if you can figure out how you could do\r\n" );
document.write( "that without listing anybody or their ages and still get 21.\r\n" );
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document.write( "Edwin
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