document.write( "Question 1207798: Rico's and Maris's age gap is 25 years.
\n" ); document.write( "4 years from now, Rico's age will be 5 years less than twices maris's age
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Algebra.Com's Answer #845896 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "let Rico's age be \"R\" and Maris's age \"M\"\r
\n" ); document.write( "\n" ); document.write( "if Rico's and Maris's age gap is \"25\" years, we have\r
\n" ); document.write( "\n" ); document.write( "\"R-M=25\" .......eq.1\r
\n" ); document.write( "\n" ); document.write( "if \"4\" years from now, Rico's age will be \"5\" years less than twices maris's age, we have\r
\n" ); document.write( "\n" ); document.write( "\"R%2B4=2%28M%2B4%29-5\"
\n" ); document.write( "\"R%2B4=2M%2B8-5\"
\n" ); document.write( "\"R=2M%2B3-4\"
\n" ); document.write( "\"R=2M-1\".........eq.2\r
\n" ); document.write( "\n" ); document.write( "go to
\n" ); document.write( "\"R-M=25\" .......eq.1, substitute \"R\"\r
\n" ); document.write( "\n" ); document.write( "\"2M-1-M=25\"
\n" ); document.write( "\"M=25%2B1\"
\n" ); document.write( "\"M=26\" \r
\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( "\"R=2M-1\".........eq.2, substitute \"M\"
\n" ); document.write( "\"R=2%2A26-1\"
\n" ); document.write( "\"R=52-1\"
\n" ); document.write( "\"R=51\"\r
\n" ); document.write( "\n" ); document.write( "answer:\r
\n" ); document.write( "\n" ); document.write( "Rico is \"51\" and Maris is \"26\"\r
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