document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1062754>Question 1062754</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a 30 year-old father has 4 year-old son. In how many years will the father be thrice as old as his son ? Show algebraic solution </SPAN>\n" );
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document.write( "first we take a difference of their age<BR>\n" );
document.write( "let father's age = F<BR>\n" );
document.write( "    and Son's age = S<BR>\n" );
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document.write( "      F - S = 26     eq-1   (30-4=26)\r<BR>\n" );
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document.write( "After X years :\r<BR>\n" );
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document.write( "         F = 3S    put in eq-1\r<BR>\n" );
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document.write( "    3S - S = 26<BR>\n" );
document.write( "    2S = 26<BR>\n" );
document.write( "    S = 13  so  F = 3S = 39\r<BR>\n" );
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document.write( "  X = 9 years <BR>\n" );
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document.write( "so it is shown that after 9 years, father will be thrice as old as his son  </SPAN>\n" );
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