document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=185614>Question 185614</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve Problems Using Linear Systems<BR>\n" );
document.write( "15. Some students at L.C.V.I. held a bake sale recently to raise money for a field trip. They charged $7 for fruit pies and $10 for meat pies. They sold a total of 52 pies and earned $424. How many of each type of pie did they sell?<BR>\n" );
document.write( "(The answer is: 32 fruit pies, 20 meat pies, but i dont know how to solve it?) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #139251 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=139251\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 10M+7F=424<BR>\n" );
document.write( "M+F=52 OR M=52-F<BR>\n" );
document.write( "NOW REPLACE M WITH (52-F) IN THE FIRST EQUATION & SOLVE FOR F.<BR>\n" );
document.write( "10(52-F)+7F=424<BR>\n" );
document.write( "520-10F+7F=424<BR>\n" );
document.write( "-3F=424-520<BR>\n" );
document.write( "-3F=-96<BR>\n" );
document.write( "F=-96/-3<BR>\n" );
document.write( "F=32 FRUIT PIES WERE SOLD.<BR>\n" );
document.write( "52-32=20 MEAT PIES WERE SOLD.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "10*20+7*32=424<BR>\n" );
document.write( "200+224=424<BR>\n" );
document.write( "424=424 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );