document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=157381>Question 157381</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A purse contains a collection of quaters, dimes,<BR>\n" );
document.write( "nickels,and pennies.Thwe average value of the coins <BR>\n" );
document.write( "in the purse is 18cents.If a penny is removed from the purse <BR>\n" );
document.write( "the average value is___19.find how many nickels are there? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #116061 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=116061\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A purse contains a collection of quarters, dimes, nickels,and pennies.<BR>\n" );
document.write( "The average value of the coins in the purse is 18 cents. If a penny is removed <BR>\n" );
document.write( "from the purse, the average value is .19. Find how many nickels are there?<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Let x = total value of the coins<BR>\n" );
document.write( "Let y = no. of coins<BR>\n" );
document.write( ":<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2Fy ALIGN=MIDDLE  ALT=\"x%2Fy\"   DISABLED_style= \"max-width:90%; height:auto;\" > = .18<BR>\n" );
document.write( "Or<BR>\n" );
document.write( "x = .18y<BR>\n" );
document.write( "then, when penny removed<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28x-.01%29%29%2F%28%28y-1%29%29 ALIGN=MIDDLE  ALT=\"%28%28x-.01%29%29%2F%28%28y-1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = .19<BR>\n" );
document.write( "Substitute .18y for x:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28.18y-.01%29%29%2F%28%28y-1%29%29 ALIGN=MIDDLE  ALT=\"%28%28.18y-.01%29%29%2F%28%28y-1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = .19<BR>\n" );
document.write( ".18y - .01 = .19(y-1)<BR>\n" );
document.write( ":<BR>\n" );
document.write( ".18y - .01 = .19y - .19<BR>\n" );
document.write( ":<BR>\n" );
document.write( "+.19 - .01 = .19y - .18y<BR>\n" );
document.write( ":<BR>\n" );
document.write( ".18 = .01y<BR>\n" );
document.write( "y = .18/.01<BR>\n" );
document.write( "y = 18 coins<BR>\n" );
document.write( "Find x<BR>\n" );
document.write( "x = .18(18)<BR>\n" );
document.write( "x = $3.24 total value<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Check this: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3.23%2F17 ALIGN=MIDDLE  ALT=\"3.23%2F17\"   DISABLED_style= \"max-width:90%; height:auto;\" > = .19 (one penny removed)<BR>\n" );
document.write( ":<BR>\n" );
document.write( "Actually I don't think there will be any nickels. <BR>\n" );
document.write( ":<BR>\n" );
document.write( "In order to get this amt with 18 coins we must have:<BR>\n" );
document.write( "12 quart = 3.00<BR>\n" );
document.write( " 2 dimes = 0.20<BR>\n" );
document.write( " 4 pennies =.04<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "18 coins = $3.24\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );