document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=259736>Question 259736</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The cost of a telephone call using long-distance carrier A is $1.00 for any time up to and including 20 minutes and $0.07 per minute thereafter. The cost using long-distance carrier B is $0.06 per minute for any amount of time. For a call that lasts t minutes, the cost using carrier A is the same as the cost using carrier B. If t is a positive integer greater than 20, what is the value of t? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #191188 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=191188\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> $1 20 minutes +.07 <BR>\n" );
document.write( ".06 per minute\r<BR>\n" );
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document.write( "20 minutes each<BR>\n" );
document.write( "$1 for a<BR>\n" );
document.write( "1.20 for b<BR>\n" );
document.write( "now to find where they are the same after those 20 minutes<BR>\n" );
document.write( "7x=6x+20<BR>\n" );
document.write( "x=20<BR>\n" );
document.write( "after 20 MORE minutes they are equal<BR>\n" );
document.write( "1+20*.07=1.20+.06*20<BR>\n" );
document.write( "2.40=1.20+1.20<BR>\n" );
document.write( "2.40=2.40<BR>\n" );
document.write( "A 40 minute call will cost the same on both carriers.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );