document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=135269>Question 135269</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rudy must play 12 commercials his 1-hr radio show Each commercial is either 30 sec or 60 sec long. If the total commercial time during that 1-hr is 10 min how many commercials of each type does Rudy play? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #99083 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=99083\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Rudy must play 12 commercials his 1-hr radio show Each commercial is either 30 sec or 60 sec long. If the total commercial time during that 1-hr is 10 min how many commercials of each type does Rudy play?<BR>\n" );
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document.write( "Let # of 30 sec commercials be x; time involved is 30x seconds<BR>\n" );
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document.write( "# of 60 sec commercials is \"12-x\" ; time involved is 60(12-x) = 720-60x<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "time + time = 10 min or 600 sec<BR>\n" );
document.write( "30x + 720-60x = 600<BR>\n" );
document.write( "-30x = -120<BR>\n" );
document.write( "x = 4 (# of 30 sec commercials)<BR>\n" );
document.write( "12-x = 8 (# of 60 sec commercials)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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