document.write( "Question 1152105: mr henry is 2 more than 5 times his sons age. 4 years ago mr h was 11 times his sons age then
\n" ); document.write( "in how many years will mr h be 3 times his sons age then
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Algebra.Com's Answer #774029 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "let mr henry's age be \"x\" and his son's age \"y\"\r
\n" ); document.write( "\n" ); document.write( "if mr henry is \"2\" more than \"5\" times his sons age, we have\r
\n" ); document.write( "\n" ); document.write( "\"x=5y%2B2\"......eq.1
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\n" ); document.write( "if \"4+\"years ago mr h was \"11\" times his sons age, we have\r
\n" ); document.write( "\n" ); document.write( "\"x-4=11%28y-4%29\".......eq.2\r
\n" ); document.write( "\n" ); document.write( "substitute \"x\" from eq.1 in eq.2\r
\n" ); document.write( "\n" ); document.write( "\"5y%2B2-4=11%28y-4%29\".......eq.2\r
\n" ); document.write( "\n" ); document.write( "\"5y-2=11y-44\"\r
\n" ); document.write( "\n" ); document.write( "\"44-2=11y-5y\"\r
\n" ); document.write( "\n" ); document.write( "\"42=6y\"\r
\n" ); document.write( "\n" ); document.write( "\"y=7\"=> his son's age now\r
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\n" ); document.write( "\n" ); document.write( "\"x=5%2A7%2B2\"......eq.1\r
\n" ); document.write( "\n" ); document.write( "\"x=37\"=>Mr Henry's age now\r
\n" ); document.write( "\n" ); document.write( "then in how many years (let it be \"t\") will Mr Henry be \"3\" times his sons age then\r
\n" ); document.write( "\n" ); document.write( "\"x%2Bt=3%28y%2Bt%29\".....plug in current ages\r
\n" ); document.write( "\n" ); document.write( "\"37%2Bt=3%287%2Bt%29\"\r
\n" ); document.write( "\n" ); document.write( "\"37%2Bt=21%2B3t\"\r
\n" ); document.write( "\n" ); document.write( "\"37-21=3t-t\"\r
\n" ); document.write( "\n" ); document.write( "\"16=2t\"\r
\n" ); document.write( "\n" ); document.write( "\"t=8\"\r
\n" ); document.write( "\n" ); document.write( "in \"8\" from now Mr Henry will be \"3\" times his sons age \r
\n" ); document.write( "\n" ); document.write( "check it:\r
\n" ); document.write( "\n" ); document.write( "\"x=37\"=>Mr Henry's age now,in \"8\" from now Mr Henry will be \"45\"\r
\n" ); document.write( "\n" ); document.write( "\"y=7\"=> his son's age now,in \"8\" from now his son will be \"15\"\r
\n" ); document.write( "\n" ); document.write( "\"45=3%2A15\"
\n" ); document.write( "\"45=45\"\r
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