document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=988424>Question 988424</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A jar contains 40 coins consisting of dimes and quarters and having a total value of $4.90.   How many of each kind of coin are there?\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Having problems figuring out the word problem. \r<BR>\n" );
document.write( "\n" );
document.write( "I have.  d + q = 40\r<BR>\n" );
document.write( "\n" );
document.write( "And\r<BR>\n" );
document.write( "\n" );
document.write( ".1d + .25q = 4.90\r<BR>\n" );
document.write( "\n" );
document.write( "Can you show me how to do it? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #807882 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=807882\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "For one thing, I would definitely recommend using cents instead of dollars to write your second equation.  Then you have<br><BR>\n" );
document.write( "d+q=40<BR>\n" );
document.write( "10d+25q=490<br><BR>\n" );
document.write( "Multiply the first equation by 10 and then compare the two equations, giving you the number of quarters, q:<br><BR>\n" );
document.write( "10d+10q=400<BR>\n" );
document.write( "10d+25q=490<br><BR>\n" );
document.write( "15q=90<BR>\n" );
document.write( "q = 6<br><BR>\n" );
document.write( "Then d+q=40 gives you d=34.<br><BR>\n" );
document.write( "ANSWER: 6 quarters and 34 dimes<br><BR>\n" );
document.write( "CHECK: 6(25)+34(10) = 150+340 = 490<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );