document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=188991>Question 188991</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me to solve this.: In 2 yrs Jack will be double his sister Jen's age. The sum of Jacks age and 3 times Jen's age equals 66. <BR>\n" );
document.write( "What is Jen's age? What is the formula to find this out and what is the answer?<BR>\n" );
document.write( "I have tried X+3Y=66; then X+y= 66/3; X+Y=22; then coming up with Jen's age as 10, but somehow this doesn't seem right. I hope you can help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #141744 by </B><A HREF=/tutors/aboutme.mpl?userid=jonvaliente><B>jonvaliente(64)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jonvaliente><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=jonvaliente><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=141744\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = jack's age <BR>\n" );
document.write( "Let y = Jen's age\r<BR>\n" );
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document.write( "In two years, Jack will be double Jen's age:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B2=2%2A%28y%2B2%29 ALIGN=MIDDLE  ALT=\"x%2B2=2%2A%28y%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The sum of Jack's age and 3 times Jen's age is 66:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B3%2Ay=66 ALIGN=MIDDLE  ALT=\"x%2B3%2Ay=66\"   DISABLED_style= \"max-width:90%; height:auto;\" >            (2)\r<BR>\n" );
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document.write( "Simplifying the first equation, we get:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B2=2%2Ay%2B4 ALIGN=MIDDLE  ALT=\"x%2B2=2%2Ay%2B4\"   DISABLED_style= \"max-width:90%; height:auto;\" > or...\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x-2%2Ay=2 ALIGN=MIDDLE  ALT=\"x-2%2Ay=2\"   DISABLED_style= \"max-width:90%; height:auto;\" >             (1)\r<BR>\n" );
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document.write( "Subtracting equation (1) from (2) we get:\r<BR>\n" );
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document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B3%2Ay=66 ALIGN=MIDDLE  ALT=\"x%2B3%2Ay=66\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x-2%2Ay=2 ALIGN=MIDDLE  ALT=\"x-2%2Ay=2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2Ay=64 ALIGN=MIDDLE  ALT=\"5%2Ay=64\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Dividing both sides by 5, we get:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=12.8 ALIGN=MIDDLE  ALT=\"y=12.8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solving for Jack's age, using equation (2), we get:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B3%2A%2812.8%29=66 ALIGN=MIDDLE  ALT=\"x%2B3%2A%2812.8%29=66\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B38.4=66 ALIGN=MIDDLE  ALT=\"x%2B38.4=66\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=27.6 ALIGN=MIDDLE  ALT=\"x=27.6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Therefore:\r<BR>\n" );
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document.write( "Jack is 27.6 years old while Jen is 12.8 years old<BR>\n" );
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