document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=767050>Question 767050</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two children own two-way radios that have a maximum range of 3 miles. One leaves a certain point at 1:00 P.M., walking due north at a rate of 2 mi/hr. The other leaves the same point at 1:15 P.M., traveling due south at 8 mi/hr. For how many minutes after 1:00 P.M. will they be able to communicate with one another? (Round your answer to the nearest minute.) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #467376 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=467376\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Two children own two-way radios that have a maximum range of 3 miles. One leaves a certain point at 1:00 P.M., walking due north at a rate of 2 mi/hr. The other leaves the same point at 1:15 P.M., traveling due south at 8 mi/hr. For how many minutes after 1:00 P.M. will they be able to communicate with one another? (Round your answer to the nearest minute.)<BR>\n" );
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document.write( "North-bound DATA:<BR>\n" );
document.write( "rate = 2 mph ; distance = 3 miles: time = d/r = 3/2 hr<BR>\n" );
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document.write( "South bound DATA:<BR>\n" );
document.write( "rate = 8 mph ; distance = 3 miles ; time = d/r = 3/8 hr<BR>\n" );
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document.write( "Time after 1:15 south can communicate: (3/8)*60 min = 22.5 min<BR>\n" );
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document.write( "Total communication time: 15+22.5 = 37.5 minutes<BR>\n" );
document.write( "Round up to 38 minutes.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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