document.write( "Question 570369: Ten years from now, A will be twicw as old as B. Five years ago, A was three times as old as B. What are the present ages of A and B? \n" ); document.write( "
Algebra.Com's Answer #367667 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Ten years from now, A will be twice as old as B. Five years ago, A was three times as old as B. What are the present ages of A and B? \n" ); document.write( "---- \n" ); document.write( "Equations: \n" ); document.write( "(A+10) = 2(B+10) \n" ); document.write( "(A-5) = 3(B-5) \n" ); document.write( "------ \n" ); document.write( "Rearrange: \n" ); document.write( "A - 2B = 10 \n" ); document.write( "A - 3B = -10 \n" ); document.write( "---- \n" ); document.write( "Subtract and solve for \"B\": \n" ); document.write( "B = 20 \n" ); document.write( "---- \n" ); document.write( "Solve for \"A\": \n" ); document.write( "A = 2B+10 \n" ); document.write( "A = 2*20+10 \n" ); document.write( "A = 50 \n" ); document.write( "================== \n" ); document.write( "cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |