document.write( "Question 1101080: Charles is 23 years older than his sister carol. In 16 years he will be twice as old as carol. How old is each of them now? \n" ); document.write( "

Algebra.Com's Answer #715655 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "Let H stands for Charles, C stands for Carol.\r\n" );
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document.write( "From the condition, you have these two equations:\r\n" );
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document.write( "H = C + 23,              (1)    (\"Charles is 23 years older than his sister carol\")\r\n" );
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document.write( "H + 16 =  2*(C+16).      (2)    (\"In 16 years he will be twice as old as carol\")\r\n" );
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document.write( "Substitute (1) into eq(2), replacing H. You will get a single equation for C:\r\n" );
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document.write( "(C+23) + 16 = 2*(C+16)  ====>\r\n" );
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document.write( "C + 39 = 2C + 32  ====>  39 - 32 = C  ====>  C = 7.\r\n" );
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document.write( "Answer.  Carol is 7 years old now.  Charles is 7+23 = 30 years old.\r\n" );
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\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
\n" ); document.write( "\n" ); document.write( "    - Age problems for mental solution \r
\n" ); document.write( "\n" ); document.write( "in this site.\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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\n" ); document.write( "\n" ); document.write( "Save the link to this online textbook together with its description\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-I
\n" ); document.write( "https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "to your archive and use it when it is needed.\r
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