document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=620303>Question 620303</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Nina is 5 years younger than Fred. In 6 years, Nina will be three-fourths as old as Fred. How old is Fred now? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #390076 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=390076\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <BR>\n" );
document.write( "Present age of Nina = n<BR>\n" );
document.write( "Present age of Fred = f\r<BR>\n" );
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document.write( "Nina is 5 years younger than Fred. <BR>\n" );
document.write( "n=f-5.............(1)\r<BR>\n" );
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document.write( "In 6 years, <BR>\n" );
document.write( "Nina will be = n+6<BR>\n" );
document.write( "Fred will be = f+6\r<BR>\n" );
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document.write( "Then\r<BR>\n" );
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document.write( "Nina will be three-fourths as old as Fred\r<BR>\n" );
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document.write( "(n+6)=3/4(f+6)<BR>\n" );
document.write( "4(n+6)=3(f+6)<BR>\n" );
document.write( "4n+24=3f+18<BR>\n" );
document.write( "4n=3f+18-24<BR>\n" );
document.write( "4n=3f-6....................(2)\r<BR>\n" );
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document.write( "Substitute the value of n from (1) to (2)<BR>\n" );
document.write( "4(f-5)=3f-6<BR>\n" );
document.write( "4f-20=3f-6<BR>\n" );
document.write( "4f-3f=-6+20<BR>\n" );
document.write( "f=14\r<BR>\n" );
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document.write( "Substitute the value of f in (1)<BR>\n" );
document.write( "n=f-5<BR>\n" );
document.write( "n=14-5<BR>\n" );
document.write( "n=9\r<BR>\n" );
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document.write( "Present age of Nina = n = 9 years old<BR>\n" );
document.write( "Present age of Fred = f = 14 years old\r<BR>\n" );
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document.write( "Check<BR>\n" );
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document.write( "In 6 years Fred will be = 14+6 = 20<BR>\n" );
document.write( "In 6 years Nina will be = 9+6 =  15 (which is 3/4 of 20, 20(3/4)=60/4=15)\r<BR>\n" );
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