document.write( "Question 1056531: Eight years ago, Cindy was twice as old as Sally. Right now, Cindy is five years older than Sally. Find their current ages. \n" ); document.write( "

Algebra.Com's Answer #671663 by ikleyn(52778) $\"\"$ $\"About$

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\n" ); document.write( "Eight years ago, Cindy was twice as old as Sally. Right now, Cindy is five years older than Sally. Find their current ages.
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document.write( "C = S + 5,         (1)    (\"Cindy is five years older than Sally.\")\r\n" );
document.write( "C - 8 = 2*(S-8).   (2)    (\"Eight years ago, . . . \")\r\n" );
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document.write( "Substitute (1) into (2). You will get\r\n" );
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document.write( "(S + 5) - 8 = 2*(S-8),\r\n" );
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document.write( "S - 3 = 2S - 16,\r\n" );
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document.write( "2S - S = 16 - 3,\r\n" );
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document.write( "S = 13.\r\n" );
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document.write( "Answer.  Sally is 13, Cindy is 13+5 = 18.\r\n" );
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\n" ); document.write( "\n" ); document.write( "By the way, the phrase \"Right now, Cindy is five years older than Sally.\" sounds strange for the human ear.\r
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\n" ); document.write( "\n" ); document.write( "If \"Cindy is five years older than Sally right now\", she always IS five years older than Sally until both are alive.
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\n" ); document.write( "\n" ); document.write( "There is a bunch of lessons on age word problems \r
\n" ); document.write( "\n" ); document.write( "    - Age problems and their solutions\r
\n" ); document.write( "\n" ); document.write( "    - A fresh formulation of a traditional age problem\r
\n" ); document.write( "\n" ); document.write( "    - Really intricate age word problem\r
\n" ); document.write( "\n" ); document.write( "    - Selected age word problems from the archive\r
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\n" ); document.write( "\n" ); document.write( "Read them and become an expert in solving age problems.\r
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\n" ); document.write( "\n" ); document.write( "Also, you have this free of charge online textbook in ALGEBRA-I in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Age word problems\".\r
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