document.write( "Question 498804: The sum of the age of Dave and Ted is 48 yrs.Eight years from now Ted will be three times Dave age. Find their present age. \n" ); document.write( "
Algebra.Com's Answer #337179 by kim09(1)![]() ![]() ![]() You can put this solution on YOUR website! let: \n" ); document.write( "x-Dave \n" ); document.write( "y-ted\r \n" ); document.write( "\n" ); document.write( " the sum of the ages of Dave and ted is 48. \n" ); document.write( "8 years from now ted will be 3 times Dave's age. \n" ); document.write( "Find their present ages.\r \n" ); document.write( "\n" ); document.write( "Equations: \n" ); document.write( "x + y = 48 \n" ); document.write( "(y+8) = 3(x+8)\r \n" ); document.write( "\n" ); document.write( "Substitute for y and solve for \"x\": \n" ); document.write( "(x + 48-x) = 3x+24 \n" ); document.write( "3x = 48-24 \n" ); document.write( "3x = 24 \n" ); document.write( "x = 8 (Dave's age now)\r \n" ); document.write( "\n" ); document.write( "Since x+y = 48, ted is 40 yrs old\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |