document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890560>Question 890560</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How long will it take to travel 2.5 billion miles at the speed of sound (1234km/h)? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #539088 by </B><A HREF=/tutors/aboutme.mpl?userid=JulietG><B>JulietG(1812)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=JulietG><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=JulietG><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=539088\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First you need to either convert miles to km, or km to miles.<BR>\n" );
document.write( "Let's change the smaller number.<BR>\n" );
document.write( "1234km/hr = 766.772051220458 miles per hour.  Hmmmm, that's going to be messy.<BR>\n" );
document.write( "Let's go the other way.<BR>\n" );
document.write( "2.5 billion miles = 4023360000.0000005 km<BR>\n" );
document.write( "That's better.  We'll disregard the .0000005 km and call it 4,023,360,000 kilometers.<BR>\n" );
document.write( "Divide the miles by the rate of speed to find the time.<BR>\n" );
document.write( "4032360000 / 1234 = 3,267,714.748784441 hours<BR>\n" );
document.write( ".<BR>\n" );
document.write( "However, the speed of sound is not 1234; it's 12250.44 km/hr<BR>\n" );
document.write( "4032360000 / 12250.44 = 329,160.421993006 hours </SPAN>\n" );
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