document.write( "Question 213442: I havea problem and couldn't find a similar problem:
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document.write( "2 years ago a father was 4 times as old as his son. 3 years from now the father will be only 3 times as old as the son. how old is each now?\r
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document.write( "can you find a problem at least similar to this one?\r
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document.write( "thank you,
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document.write( "Destiny \n" );
document.write( "
Algebra.Com's Answer #161216 by rapaljer(4671)![]() ![]() You can put this solution on YOUR website! Let x = age of son now \n" ); document.write( "y= age of father now\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x-2= age of son 2 years ago \n" ); document.write( "y-2 = age of father 2 years ago\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x+3 = age of father 3 years from now \n" ); document.write( "y+3= age of father 3 years from now\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y-2=4(x-2) \n" ); document.write( "y+3=3(x+3)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y-2=4x-8, so y = 4x-6 \n" ); document.write( "y+3=3x+9, so y=3x+6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now, since \n" ); document.write( "y=4x-6 and y=3x+6, \n" ); document.write( " 4x-6=3x+6 \n" ); document.write( "x=12 Age of son now \n" ); document.write( "y=3x+6 \n" ); document.write( "y=3(12)+6 \n" ); document.write( "y=36+6=42 Age of father now\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Check: \r \n" ); document.write( "\n" ); document.write( "2 years ago, son was 10 and father was 40--(four times as old!) \n" ); document.write( "3 years from now, the son will be 15 and father will be 45--(three times as old!!)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "I would love to recommend my website to you on this, but I just don't have anything like this on it!!! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "R^2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Dr. Robert J. Rapalje, Retired \n" ); document.write( "Seminole Community College \n" ); document.write( "Altamonte Springs Campus \n" ); document.write( "Florida\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |