document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1125829>Question 1125829</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. [4 pts] The average weight of 6 people in an elevator is 173 pounds. A 7th<BR>\n" );
document.write( "person gets on and now the average weight is 165 pounds. How much<BR>\n" );
document.write( "did the 7th person weigh? </SPAN>\n" );
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document.write( "The average of all 7 people is the total weight of the original 6 people, plus the weight of the 7th person, all divided by 7.  Algebraically....<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%286%2A173%29%2Bx%29%2F7 ALIGN=MIDDLE  ALT=\"%28%286%2A173%29%2Bx%29%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "The average weight is now 165; so solve the equation<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%286%2A173%29%2Bx%29%2F7+=+165 ALIGN=MIDDLE  ALT=\"%28%286%2A173%29%2Bx%29%2F7+=+165\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "I'll let you finish....<br><BR>\n" );
document.write( "For problems like this involving an average of numbers that are \"close\" together, here is a different strategy for solving the problem that you might like to try.<br><BR>\n" );
document.write( "The original 6 people have an average weight of 173, which is 8 pounds more than the average of all 7 people.  So all together, the weight of those 6 people is 6*8=48 pounds over the 165 average.  That means the 7th person's weight must be 48 pounds below the 165 average.<br><BR>\n" );
document.write( "So the weight of the 7th person is 165-48 = 117 pounds. </SPAN>\n" );
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