document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1189983>Question 1189983</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A driver travels 115 km on his first day. On his second day he travels 85 km. If this driver has traveled 80% of the distance, how many kilometers does he have left to travel?<BR>\n" );
document.write( "a)20  b)40  c)50  c)160  d)200 </SPAN>\n" );
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document.write( "x = total distance to travel, in km\r<BR>\n" );
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document.write( "The driver has done 115+85 = 200 km so far which is 80% of the way there.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=200%2Fx+=+80%2F100 ALIGN=MIDDLE  ALT=\"200%2Fx+=+80%2F100\"   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=200%2A100+=+80x ALIGN=MIDDLE  ALT=\"200%2A100+=+80x\"   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=20000+=+80x ALIGN=MIDDLE  ALT=\"20000+=+80x\"   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=80x+=+20000 ALIGN=MIDDLE  ALT=\"80x+=+20000\"   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+=+20000%2F80 ALIGN=MIDDLE  ALT=\"x+=+20000%2F80\"   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+=+250 ALIGN=MIDDLE  ALT=\"x+=+250\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Or as a slight alternative, we're solving the equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.80x+=+200 ALIGN=MIDDLE  ALT=\"0.80x+=+200\"   DISABLED_style= \"max-width:90%; height:auto;\" > to get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+250 ALIGN=MIDDLE  ALT=\"x+=+250\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The total distance s/he needs to travel is 250 km.\r<BR>\n" );
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document.write( "If the driver has done 200 km so far, then there's 250-200 = 50 km left to go.\r<BR>\n" );
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document.write( "Answer: c) 50<BR>\n" );
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