document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1126156>Question 1126156</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A boat travels 25km/h in still water. If the boat goes upstream in a river flowing at a rate of 7km/h, for 2 km, and then returns downstream to its starting point, what is the average speed for the while trip in km/h? </SPAN>\n" );
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document.write( "                   SPEED     TIME     DISTANCE\r\n" );
document.write( "upstream          25-7=18    2/18         2        \r\n" );
document.write( "downstream        25+7=32    2/32         2      \r\n" );
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document.write( "Total Distance, 4 kilometers<BR>\n" );
document.write( "Total Time, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F9%2B1%2F16=25%2F%289%2A16%29 ALIGN=MIDDLE  ALT=\"1%2F9%2B1%2F16=25%2F%289%2A16%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Average round trip speed, \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284%2A9%2A16%29%2F25=23.04 ALIGN=MIDDLE  ALT=\"%284%2A9%2A16%29%2F25=23.04\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "About 23 kilometers per hour </SPAN>\n" );
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