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)![]() ![]() ![]() You can put this solution on YOUR website! 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( "*** \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( " \n" ); document.write( " |