document.write( "Question 10815: Roz is twice as old as Grace. In 5 years the sum of their ages will be 28. How old are they now? \n" ); document.write( "
Algebra.Com's Answer #5675 by Earlsdon(6294)![]() ![]() ![]() You can put this solution on YOUR website! Let R be Roz's present age and G be Grace's present age.\r \n" ); document.write( "\n" ); document.write( "1) R = 2G\r \n" ); document.write( "\n" ); document.write( "2) R+5 + G+5 = 28 Substitute R = 2G and solve for G.\r \n" ); document.write( "\n" ); document.write( "2G+5 + G+5 = 28 Simplify and solve for G. \n" ); document.write( "3G + 10 = 28 Subtract 10 from both sides. \n" ); document.write( "3G = 18 Divide both sides by 3. \n" ); document.write( "G = 6\r \n" ); document.write( "\n" ); document.write( "R = 2G \n" ); document.write( "R = 12\r \n" ); document.write( "\n" ); document.write( "Roz is 12 years old. \n" ); document.write( "Grace is 6 years old. \n" ); document.write( " |