document.write( "Question 1185055: Five years from now, Jabin's grandmother will be 3 times as old as Jabin. The sum of the squares of their ages in 5 years is 8410. what is Jabin's present age?\r
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Algebra.Com's Answer #815780 by ikleyn(52788) $\"\"$ $\"About$

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\n" ); document.write( "Five years from now, Jabin's grandmother will be 3 times as old as Jabin.
\n" ); document.write( "The sum of the squares of their ages in 5 years is 8410. what is Jabin's present age?
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\n" ); document.write( "\n" ); document.write( " This problem has a simple and elegant solution. All you need is to look \r
\n" ); document.write( "\n" ); document.write( " at the problem from the right point of view . . . \r
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document.write( "Let x be the Jabin's age in 5 years from now.\r\n" );
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document.write( "Then the grandmother's age in 5 years from now will be 3x, according to the condition.\r\n" );
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document.write( "Now we write equation for x as we read the problem\r\n" );
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document.write( "    x^2 + (3x)^2 = 8410.\r\n" );
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document.write( "Simplify and find x\r\n" );
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document.write( "    x^2 + 9x^2 = 8410\r\n" );
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document.write( "       10x^2 = 8410\r\n" );
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document.write( "         x^2 = 841\r\n" );
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document.write( "         x   =  = 29  is the Jabin's age in 5 years from now.\r\n" );
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document.write( "ANSWER.  This year, Jabin is  29-5 = 24 years old.\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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