document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=50885>Question 50885</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is for my 12 year old nephew in the 7th grade.  This question is off of a worksheet.  The question is:\r<BR>\n" );
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document.write( "You can use the expression 5M to find out how many seconds it takes a sound to travel M miles through the air.  However, through water sound takes M seconds to travel M miles.  Use an expression like 5M-M to find out how much longer it will take sound to travel 8 miles in air than in water. \r<BR>\n" );
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document.write( "Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #33942 by </B><A HREF=/tutors/aboutme.mpl?userid=darq><B>darq(90)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=darq><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=darq><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=33942\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> so sound travels 5 time faster in the water which means that it will take 5M time rather than M time to travel through the air.<BR>\n" );
document.write( "if we are talking about a 8 times longer way it will take 40M in the air, 8M in the water.<BR>\n" );
document.write( "subtract the 8M from 40M to see the difference; that is 32!<BR>\n" );
document.write( "32M - 8M or you can use this; 8(4M-M) <BR>\n" );
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