document.write( "Question 1023933: Samantha is twice Helen's age. Three years ago, the sum of their age was 45. How old will Helen be in 3 years? \n" ); document.write( "
Algebra.Com's Answer #802254 by CubeyThePenguin(3113)![]() ![]() You can put this solution on YOUR website! S = Samantha's age \n" ); document.write( "H = Helen's age\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "S = 2H \n" ); document.write( "(S-3)+(H-3) = 45\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Plug in the first equation into the second.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2H - 3 + H - 3 = 45 \n" ); document.write( "3H = 51 \n" ); document.write( "H = 17\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Samantha is 34 and Helen is 17. \n" ); document.write( " |