document.write( "Question 951004: Five Years ago I was 5 times older than my son. In 8 Years I will be 3 times older than my son. How old am I today? \n" ); document.write( "
Algebra.Com's Answer #580742 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
Let \"+f+\" = father's age now
\n" ); document.write( "Let \"+s+\" = son's age now
\n" ); document.write( "--------------------------
\n" ); document.write( "(1) \"+f+-+5+=+5%2A%28+s+-+5+%29+\"
\n" ); document.write( "(2) \"+f+%2B+8+=+3%2A%28+s+%2B+8+%29+\"
\n" ); document.write( "--------------------------
\n" ); document.write( "(1) \"+f+-+5+=+5s+-+25+\"
\n" ); document.write( "(1) \"+5s+-+f+=+20+\"
\n" ); document.write( "and
\n" ); document.write( "(2) \"+f+%2B+8+=+3s+%2B+24+\"
\n" ); document.write( "(2) \"+-3s+%2B+f+=+16+\"
\n" ); document.write( "---------------------
\n" ); document.write( "Add the equations
\n" ); document.write( "(1) \"+5s+-+f+=+20+\"
\n" ); document.write( "(2) \"+-3s+%2B+f+=+16+\"
\n" ); document.write( "-------------------
\n" ); document.write( "\"+2s+=+36+\"
\n" ); document.write( "\"+s+=+18+\"
\n" ); document.write( "and
\n" ); document.write( "(2) \"+-3s+%2B+f+=+16+\"
\n" ); document.write( "(2) \"+-3%2A18+%2B+f+=+16+\"
\n" ); document.write( "(2) \"+-54+%2B+f+=+16+\"
\n" ); document.write( "(2) \"+f+=+70+\"
\n" ); document.write( "----------------
\n" ); document.write( "You are 70
\n" ); document.write( "Your son is 18
\n" ); document.write( "-------------
\n" ); document.write( "check:
\n" ); document.write( "(1) \"+f+-+5+=+5%2A%28+s+-+5+%29+\"
\n" ); document.write( "(1) \"+70+-+5+=+5%2A%28+18+-+5+%29+\"
\n" ); document.write( "(1) \"+65+=+5%2A13+\"
\n" ); document.write( "(1) \"+65+=+65+\"
\n" ); document.write( "and
\n" ); document.write( "(2) \"+f+%2B+8+=+3%2A%28+s+%2B+8+%29+\"
\n" ); document.write( "(2) \"+70+%2B+8+=+3%2A%28+18+%2B+8+%29+\"
\n" ); document.write( "(2) \"+78+=+3%2A26+\"
\n" ); document.write( "(2) \"+78+=+78+\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );