document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1121533>Question 1121533</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mr. Thompson sold 4 vacuum cleaners in the first month. In the second month, he sold 3 times as many vacuum cleaners as the first month. In the third month, he sold 5 times as many vacuum cleaners as the first month.<BR>\n" );
document.write( "a. How many vacuum cleaners did Mr. Thompson sell in the three months?<BR>\n" );
document.write( "Mr. Thompson sold  36 vacuum cleaners in the three months.<BR>\n" );
document.write( "b. He sold the vacuum cleaners for $435 each. How much money did Mr. Thompson earn? Mr. Thompson earned $15,660<BR>\n" );
document.write( "c. Explain how you can use estimation to check your answer to part b.<BR>\n" );
document.write( "Mr. Thomason sold 5 times more vacuum cleaners than his first month. 4 + (4 X 3) = 4 + 12+ 20=36. Mr. Thomason sold 36 vacuum cleaner during the third month.  Each vacuum cleaner cost was $435:  36 X $435.00= $15, 660<BR>\n" );
document.write( "Estimation: <BR>\n" );
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document.write( "Mr. Thompson sold 4 vacuum cleaners in the first month. In the second month, he sold 3 times as many vacuum cleaners as the first month. In the third month, he sold 5 times as many vacuum cleaners as the first month.<BR>\n" );
document.write( "a. How many vacuum cleaners did Mr. Thompson sell in the three months?<BR>\n" );
document.write( "Mr. Thompson sold 36 vacuum cleaners in the three months.<BR>\n" );
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document.write( "MONTH NUMBER     VACUUMS SOLD\r\n" );
document.write( "1                      4\r\n" );
document.write( "2                     12\r\n" );
document.write( "3                     20\r\n" );
document.write( "Total                 36\r\n" );
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document.write( "b. He sold the vacuum cleaners for $435 each. How much money did Mr. Thompson earn? Mr. Thompson earned $15,660<BR>\n" );
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document.write( "Is this a question of revenue?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=36%2Avacuums%2A435%2A%28dollars%2Fvacuum%29=15660%2Adollars ALIGN=MIDDLE  ALT=\"36%2Avacuums%2A435%2A%28dollars%2Fvacuum%29=15660%2Adollars\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "c. Explain how you can use estimation to check your answer to part b.<BR>\n" );
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document.write( "Methods to estimate could vary, but  a very rough estimate can be:\r<BR>\n" );
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document.write( "36 vacuums at  435 dollars each,<BR>\n" );
document.write( "40 vacuums at 400 dollars each  (which are only approximate),<BR>\n" );
document.write( "about  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=40%2A400=16000 ALIGN=MIDDLE  ALT=\"40%2A400=16000\"   DISABLED_style= \"max-width:90%; height:auto;\" >, obviously this way giving a high estimate. </SPAN>\n" );
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