document.write( "Question 246542: zelma is eighteen years older than her son. she was three times as old as he was one year ago. how old are they now? \n" ); document.write( "
Algebra.Com's Answer #180001 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! Loved those age problems since I first saw them \n" ); document.write( "z=18+s \n" ); document.write( "z-1=3(s-1) \n" ); document.write( "substitute\r \n" ); document.write( "\n" ); document.write( "18+s-1=3(s-1) \n" ); document.write( "17-s=3s-3 \n" ); document.write( "20=2s \n" ); document.write( "s=10 \n" ); document.write( "z=28 \n" ); document.write( "check \n" ); document.write( "28-1=3*(10-1) \n" ); document.write( "27=3*9 \n" ); document.write( "27=27 \n" ); document.write( "ok \n" ); document.write( " |