document.write( "Question 766466: Allen is 4 yr older than his brother Randy. Three years ago, Allen was twice as old as Randy. How old is each now? Please solve using system of equations if possible please. \n" ); document.write( "
Algebra.Com's Answer #466910 by lwsshak3(11628)\"\" \"About 
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Allen is 4 yr older than his brother Randy. Three years ago, Allen was twice as old as Randy. How old is each now? Please solve using system of equations if possible please.
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\n" ); document.write( "let x=Allen's present age
\n" ); document.write( "let y=Randy's present age
\n" ); document.write( "x=y+4
\n" ); document.write( "..
\n" ); document.write( "3 yrs ago:
\n" ); document.write( "x-3=Allen's age
\n" ); document.write( "y-3=Randy's age
\n" ); document.write( "x-3=2(y-3)
\n" ); document.write( "...
\n" ); document.write( "x=y+4
\n" ); document.write( "x-3=2(y-3)=2y-6
\n" ); document.write( "..
\n" ); document.write( "x-y=4
\n" ); document.write( "x-2y=-3
\n" ); document.write( "subtract:
\n" ); document.write( "y=7
\n" ); document.write( "x=7+4=11
\n" ); document.write( "..
\n" ); document.write( "Allen's present age=11
\n" ); document.write( "Randy's present age=7\r
\n" ); document.write( "\n" ); document.write( "
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