document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=799392>Question 799392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a car traveling at 70 miles per hour, what is the distance of travel within 30 seconds? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #482647 by </B><A HREF=/tutors/aboutme.mpl?userid=DrBeeee><B>DrBeeee(684)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=DrBeeee><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=482647\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let r = speed or rate in mph<BR>\n" );
document.write( "Let t = time travelled in hrs<BR>\n" );
document.write( "Let d = distance travelled in t hours, in miles<BR>\n" );
document.write( "Now use the distance formula<BR>\n" );
document.write( "(1) d = rt<BR>\n" );
document.write( "The rate is 70 miles per hour, but the time is 30 seconds. We need the time in hours, not seconds, so how do you change 30 sec to x hrs? <BR>\n" );
document.write( "Do this<BR>\n" );
document.write( "(2) 30 sec = 30 sec * x hr/sec<BR>\n" );
document.write( "Since one hour is for 60 sec/min*60 min/hr or 3600 sec/hr, we have the inverse or<BR>\n" );
document.write( "(3) x = 1/3600 hr/sec<BR>\n" );
document.write( "Then we use (1) to get<BR>\n" );
document.write( "(4) d = 70*(30/3600) or<BR>\n" );
document.write( "(5) d = 7/12 <BR>\n" );
document.write( "Answer: the car travels 7/12 mile in 30 seconds. This is 3080 feet. Note that in one second at 70 mph you travel about 103 feet. </SPAN>\n" );
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