document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1153170>Question 1153170</A>: <I><SPAN STYLE=\"word-break: break-all;\"> When the charity collected all of its tin cans from convenient stores, they contained 80% more pennies than nickels. If the combined value of the pennies and nickels was $22.10, how many nickels did the tin cans contain?  </SPAN>\n" );
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document.write( "Solving the problem mentally, with the \"80% more pennies than nickels\" I would say for every 5 nickels there are 9 pennies.<br><BR>\n" );
document.write( "Then each group of 5 nickels and 9 pennies has a value of 34 cents.<br><BR>\n" );
document.write( "The total $22.10, divided by 34 cents, gives 65 groups.<br><BR>\n" );
document.write( "Finally, since each group contains 5 nickels, the number of nickels is 65*5 = 325.<br><BR>\n" );
document.write( "Formally....<br><BR>\n" );
document.write( "Let x = number of nickels<BR>\n" );
document.write( "Then 1.8x = number of pennies<br><BR>\n" );
document.write( "The total value of the nickels at 5 cents each and the pennies at 1 cent each is $22.10, or 2210 cents:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%28x%29%2B1%281.8x%29+=+2210 ALIGN=MIDDLE  ALT=\"5%28x%29%2B1%281.8x%29+=+2210\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x%2B1.8x+=+2210 ALIGN=MIDDLE  ALT=\"5x%2B1.8x+=+2210\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6.8x+=+2210 ALIGN=MIDDLE  ALT=\"6.8x+=+2210\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+2210%2F6.8+=+325 ALIGN=MIDDLE  ALT=\"x+=+2210%2F6.8+=+325\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "ANSWER: 325 nickels<br><BR>\n" );
document.write( " </SPAN>\n" );
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