document.write( "Question 1143571: Lester is older than John by 7 years. 15 years back John's age was 3/4 of Lester's age. Find their present ages. \n" ); document.write( "

Algebra.Com's Answer #764421 by ikleyn(52817) $\"\"$ $\"About$

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document.write( "Let L be the Lester's age; then the John's age is L-7 years.\r\n" );
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document.write( "15 years back John's age was ((L-7)-15) = L-21;  Lester's age was L-15 years.\r\n" );
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document.write( "The condition says\r\n" );
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document.write( "    L - 22 = .\r\n" );
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document.write( "Solve this equation step by step. Start multiplying both sides by 4.\r\n" );
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document.write( "    4L - 88 = 3*(L-15)\r\n" );
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document.write( "    4L - 88 = 3L - 45\r\n" );
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document.write( "    4l - 3L = 88 - 45\r\n" );
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document.write( "     L      = 43.\r\n" );
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document.write( "ANSWER.  Lester is 43 years old;  John is 43 - 7 = 36 years old.\r\n" );
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document.write( "CHECK.   43 - 15 = 28;  36 - 15 = 21;    21 = .    ! Correct !\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( "    - 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( "\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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