document.write( "Question 1014300: Mr Jones is now 28 years older than Robbie. Nine years ago, he was five times as old as Robbie was then. How old is each? \n" ); document.write( "
Algebra.Com's Answer #802248 by CubeyThePenguin(3113)![]() ![]() You can put this solution on YOUR website! Mr. Jones = J \n" ); document.write( "Robbie = R\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "J = R + 28 \n" ); document.write( "J - 9 = 5(R - 9)\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( "R + 19 = 5R - 45 \n" ); document.write( "64 = 4R\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Robbie's age = R = 16 \n" ); document.write( "Mr. Jones' age = J = 44 \n" ); document.write( " |