document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=924155>Question 924155</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A train travels 110 km in the same time that a plane covers 385 km. If the speed of the plane is 30 km per hr less than 4 times the speed of the train, find both speeds. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #560649 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=560649\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = speed of airplane<BR>\n" );
document.write( "y = speed of train<BR>\n" );
document.write( "---<BR>\n" );
document.write( "s = d/t<BR>\n" );
document.write( "t = d/s<BR>\n" );
document.write( "---<BR>\n" );
document.write( "airplane time:<BR>\n" );
document.write( "t = 385/x<BR>\n" );
document.write( "---<BR>\n" );
document.write( "train time:<BR>\n" );
document.write( "t = 110/y<BR>\n" );
document.write( "---<BR>\n" );
document.write( "t = 385/x = t = 110/y<BR>\n" );
document.write( "385/x = 110/y<BR>\n" );
document.write( "385y = 110x<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x = 4y - 30<BR>\n" );
document.write( "---<BR>\n" );
document.write( "385y = 110x<BR>\n" );
document.write( "x = 4y - 30<BR>\n" );
document.write( "---<BR>\n" );
document.write( "put the system of linear equations into standard form<BR>\n" );
document.write( "---<BR>\n" );
document.write( "110x - 385y = 0<BR>\n" );
document.write( "x - 4y = -30<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( "solution:<BR>\n" );
document.write( "x = speed of airplane = 210 kph<BR>\n" );
document.write( "y = speed of train = 60 kph<BR>\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" );