document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=923404>Question 923404</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A wheel shop sells bicycles and go carts. The bike has only 1 seat and the go cart has only 1 seat. There are a total of 21 seats and 51 wheels in that room. How many bicycles and go carts are in that room? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #560101 by </B><A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><B>TimothyLamb(4379)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=TimothyLamb><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=TimothyLamb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=560101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> b + c = 21<BR>\n" );
document.write( "2b + 4c = 51<BR>\n" );
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document.write( "put the system of linear equations into standard form<BR>\n" );
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document.write( "b + c = 21<BR>\n" );
document.write( "2b + 4c = 51<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x + y = 21<BR>\n" );
document.write( "2x + 4y = 51<BR>\n" );
document.write( "---<BR>\n" );
document.write( "copy and paste the above standard form linear equations in to this solver:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "answer:<BR>\n" );
document.write( "x = number of bikes = 16.5<BR>\n" );
document.write( "y = number of carts = 4.5<BR>\n" );
document.write( "NOTE: this is a trick question, it's impossible to have fractional bikes or carts<BR>\n" );
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document.write( "solve by substitution:<BR>\n" );
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document.write( "b + c = 21<BR>\n" );
document.write( "2b + 4c = 51<BR>\n" );
document.write( "---<BR>\n" );
document.write( "c = 21 - b<BR>\n" );
document.write( "2b + 4(21 - b) = 51<BR>\n" );
document.write( "2b + 84 - 4b = 51<BR>\n" );
document.write( "2b = 33<BR>\n" );
document.write( "b = 16.5 bikes<BR>\n" );
document.write( "c = 21 - 16.5 = 4.5 carts<BR>\n" );
document.write( "---\r<BR>\n" );
document.write( "\n" );
document.write( "---<BR>\n" );
document.write( "Solve and graph linear equations:<BR>\n" );
document.write( "https://sooeet.com/math/linear-equation-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve quadratic equations, quadratic formula:<BR>\n" );
document.write( "https://sooeet.com/math/quadratic-formula-solver.php<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Solve systems of linear equations up to 6-equations 6-variables:<BR>\n" );
document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );