document.write( "Question 1135247: Word Problems
\n" ); document.write( "A man is twice as old as his son. His son is twice as old as his sister. The sum of their ages is 77 years. Find each persons age. \n" ); document.write( "

Algebra.Com's Answer #752836 by ikleyn(52788) $\"\"$ $\"About$

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document.write( "Sister + Son      + Man          = 77\r\n" );
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document.write( "Sister + 2*Sister + 2*(2*Sister) = 77\r\n" );
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document.write( "Sister + 2Sister  + 4*Sister     = 77\r\n" );
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document.write( "7*Sister = 77   =================>  Sister = 77/7 = 11.\r\n" );
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document.write( "Answer.  Sister = 11;  Son = 2*11 = 22;  Man = 4*11 = 44.\r\n" );
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