document.write( "Question 776779: Peter's age 13 years ago was 1/3 of his age seven years hence. How old is peter? \n" ); document.write( "
Algebra.Com's Answer #473726 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Peter's age 13 years ago was 1/3 of his age seven years hence. How old is peter?
\n" ); document.write( "------
\n" ); document.write( "Equation::
\n" ); document.write( "p-13 = (1/3)(p+7)
\n" ); document.write( "----
\n" ); document.write( "3p - 39 = p + 7
\n" ); document.write( "2p = 46
\n" ); document.write( "Peter's age = 23 yrs.
\n" ); document.write( "=======================
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "
\n" );