document.write( "Question 974172: John is three times older than Peter. Four years ago John was four times older than Peter was at that time. How old are they now? \n" ); document.write( "
Algebra.Com's Answer #596152 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
John is three times older than Peter. Four years ago John was four times older than Peter was at that time. How old are they now?
\n" ); document.write( "==============
\n" ); document.write( "3 times older = 4 times as old.
\n" ); document.write( "4 times older = 5 times as old.
\n" ); document.write( "===================
\n" ); document.write( "J = 4P
\n" ); document.write( "J - 4 = 5(P - 4) = 5P - 20
\n" ); document.write( "-----------------------------
\n" ); document.write( "4P - 4 = 5P - 20
\n" ); document.write( "P = 16
\n" ); document.write( "J = 64
\n" ); document.write( "
\n" );