document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=511353>Question 511353</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bus travels 125 miles in the same time an airplane travels 1515 miles. If the rate of the car is 315 miles per hour less than the rate of the airplane, what is the rate of each? Let r represent the rate of the car. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #342173 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=342173\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A bus travels 125 miles in the same time an airplane travels 1515 miles. If the rate of the car is 315 miles per hour less than the rate of the airplane, what is the rate of each? Let r represent the rate of the car.<BR>\n" );
document.write( "**<BR>\n" );
document.write( "let r=rate of car<BR>\n" );
document.write( "r+315=rate of airplane<BR>\n" );
document.write( "Travel time = distance/rate of speed (same for both)<BR>\n" );
document.write( "125/r=1515/r+315<BR>\n" );
document.write( "cross-multiply<BR>\n" );
document.write( "125r+125*315=1515r<BR>\n" );
document.write( "1515r-125r=125*315<BR>\n" );
document.write( "1390r=39375<BR>\n" );
document.write( "r=28.32<BR>\n" );
document.write( "r+315=343.33<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "rate of speed of car=28.32 mph<BR>\n" );
document.write( "rate of speed of airplane=343.33 mph </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );