document.write( "Question 1113373: 5 years ago carlos age was 7 times of tom's age but after 3 years carlos age will be 4 times of tom's age. calculate their ages ? \n" ); document.write( "

Algebra.Com's Answer #728395 by ikleyn(52852) $\"\"$ $\"About$

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document.write( "C - 5 = 7*(T-5)     (1)     (5 years ago . . . )\r\n" );
document.write( "C + 3 = 4*(T+3)     (2)     (in 3 years . . . )\r\n" );
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document.write( "From (1), express  C = 7*(T-5) + 5 = 7T -35 + 5 = 7T -30   and substitute it into eq(2).  You will get\r\n" );
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document.write( "(7T - 30) + 3 = 4*(T+3)\r\n" );
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document.write( "7T - 27 = 4T + 12\r\n" );
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document.write( "3T = 12 + 27 = 39  ====>  T =  = 13.\r\n" );
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document.write( "Answer.  T = 13,  C = 7T - 30 = 7*13-30 = 91-30 = 61.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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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
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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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