document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=868419>Question 868419</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An electronics store receives a shipment of 30 graphing calculators, including 7 that are defective. 4 of the calculators are selected to be sent to a local high school. How many selections can be made using the original shipment? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #523559 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=523559\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Anuj alone does the job in 20 days.<BR>\n" );
document.write( "every third day he takes help\r<BR>\n" );
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document.write( "so he takes help on 6 days\r<BR>\n" );
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document.write( "anuj does 1/20 of job in 1 day\r<BR>\n" );
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document.write( "and on 6 days they do 1/20+1/30+1/60 of the job = 1/10 of the job\r<BR>\n" );
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document.write( "On 6 days they do 6/10 of the job<BR>\n" );
document.write( "and on 14 days 14/20 of the job is done\r<BR>\n" );
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document.write( "in 20 days they can do 6/10 + 14/20 of the job<BR>\n" );
document.write( "=26/20 of the job in 20 days\r<BR>\n" );
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document.write( "so 26/20 of the job 20 days<BR>\n" );
document.write( "1 job = 400/26= 15.38 days </SPAN>\n" );
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