document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=302987>Question 302987</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane can fly 420 miles in the same time as it takes a car to go 120 miles. If the car travels 100 mph slower than the plane, find the speed of the plane.\r<BR>\n" );
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document.write( "so what is the speed of the plane ?\r<BR>\n" );
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document.write( "thank you :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #217214 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16949)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=217214\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane can fly 420 miles in the same time as it takes a car to go 120 miles. If the car travels 100 mph slower than the plane, find the speed of the plane.\r<BR>\n" );
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document.write( "so what is the speed of the plane ?\r<BR>\n" );
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document.write( "thank you :)\r<BR>\n" );
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document.write( "Letthe rate of the plane be x\r<BR>\n" );
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document.write( "distance traveled by plane = 420 miles\r<BR>\n" );
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document.write( "time taken by plane = 420/x\r<BR>\n" );
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document.write( "distance traveled by car =120 miles\r<BR>\n" );
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document.write( "rate of car = x-120\r<BR>\n" );
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document.write( "time taken by car = 120 / x-100\r<BR>\n" );
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document.write( "the time taken by both are same\r<BR>\n" );
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document.write( "420/x = 120/ x-100\r<BR>\n" );
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document.write( "420(x-100)=120x\r<BR>\n" );
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document.write( "420x-42000 = 120x\r<BR>\n" );
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document.write( "420x-120x=42000\r<BR>\n" );
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document.write( "300x= 42000\r<BR>\n" );
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document.write( "x=42000/300\r<BR>\n" );
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document.write( "x=140 mph  the speed of the plane\r<BR>\n" );
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document.write( "Ananth\r<BR>\n" );
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document.write( " </SPAN>\n" );
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