document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=170510>Question 170510</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mary is 12 years old. Robin her mother is 35.\r<BR>\n" );
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document.write( "a. Write an expression for the person’s age y years from now.<BR>\n" );
document.write( "b. Write an equation stating that Robin is twice as old as Mary. How old will they both be at this time?<BR>\n" );
document.write( "c. What will their ages be when Robin is 3 times as old as Mary\r<BR>\n" );
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document.write( "I know that expression for the person's age y years from now is:<BR>\n" );
document.write( "Mary: 12 + y<BR>\n" );
document.write( "Robin: 35 + y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #125895 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=125895\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> b. so  when is robin twice as old as mary.  Take you expressions<BR>\n" );
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document.write( "robin (35+y)=2 mary's 2(12+y)<BR>\n" );
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document.write( "35+y=24+2y--->combine like terms<BR>\n" );
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document.write( "y=11------->so robin will be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=35%2B11=46 ALIGN=MIDDLE  ALT=\"35%2B11=46\"   DISABLED_style= \"max-width:90%; height:auto;\" >and Mary will be<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12%2B11=23 ALIGN=MIDDLE  ALT=\"12%2B11=23\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "c. this time we have robin(35+y)=3 mary's(12+y)<BR>\n" );
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document.write( "35+y=3(12+y)<BR>\n" );
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document.write( "35+y=36+3y-->combine like terms<BR>\n" );
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document.write( "y=-1/2  so Robin was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=35-1%2F2=34.5 ALIGN=MIDDLE  ALT=\"35-1%2F2=34.5\"   DISABLED_style= \"max-width:90%; height:auto;\" > and Mary was <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=12-1%2F2=11.5 ALIGN=MIDDLE  ALT=\"12-1%2F2=11.5\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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