document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1101730>Question 1101730</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rob is 21 years old, angie is twice as old as Rob was when Angie was old as Rob is now, how old is angie? </SPAN>\n" );
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document.write( "Let x be the number of years ago when Angie was as old as Rob is now.  Then...<br><BR>\n" );
document.write( "Rob's age now is 21; his age x years ago was 21-x.<BR>\n" );
document.write( "Angie's age now is 2(21-x) = 42-2x.  (she is twice as old as Rob was x years ago)<BR>\n" );
document.write( "So Angie's age x years ago was 42-3x.<br><BR>\n" );
document.write( "But Angie's age then is equal to Rob's age now:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=42-3x+=+21 ALIGN=MIDDLE  ALT=\"42-3x+=+21\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=21+=+3x ALIGN=MIDDLE  ALT=\"21+=+3x\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+7 ALIGN=MIDDLE  ALT=\"x+=+7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "Angie's current age is 42-2x = 42-14 = 28. </SPAN>\n" );
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