document.write( "Question 1002306: Mother is three times as old as her son. Ten years from now, mother will be two times as old as her son.how old are they now?\r
\n" );
document.write( "\n" );
document.write( "Please solve this problem involving systems of linear equations in two variables. \n" );
document.write( "
Algebra.Com's Answer #619296 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Call the son's age now, x. \n" ); document.write( "Call the mom's age now, y. \n" ); document.write( "y = 3x \n" ); document.write( "In ten years \n" ); document.write( "y+10 = 2(x+10) \n" ); document.write( "Substitute for y in the second equation and get \n" ); document.write( "3x+10 = 2(x+10) \n" ); document.write( "3x + 10 = 2x + 20 \n" ); document.write( "x = 10 \n" ); document.write( "y = 30 \n" ); document.write( " |