document.write( "Question 1181994: Stella is 4 years older than Maria. In 12 years, Stella will be twice Maria's present age. How old is Maria now? \n" ); document.write( "
Algebra.Com's Answer #811956 by ikleyn(52798)\"\" \"About 
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\n" ); document.write( "Stella is 4 years older than Maria. In 12 years, Stella will be twice Maria's present age.
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document.write( "Let x be the Maria's present age.\r\n" );
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document.write( "Then the Stell's age is  (x+4), according to the problem's description.\r\n" );
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document.write( "In 12 years, Stella's age will be  ((x+4)+12) = (x+16) years.\r\n" );
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document.write( "According to the problem's description, we can write this equation\r\n" );
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document.write( "    x + 16 = 2x.\r\n" );
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document.write( "It implies\r\n" );
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document.write( "    16 = 2x - x\r\n" );
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document.write( "     x = 16.\r\n" );
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document.write( "ANSWER.  Maria is 16 years old.  It is her present age.\r\n" );
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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( "    - HOW TO algebreze and to solve age problems? \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 problems\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( "    - Age problem for three participants \r
\n" ); document.write( "\n" ); document.write( "    - Miscellaneous age problems \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
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\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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