document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=256018>Question 256018</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sergio plans to paint the 4 walls of his room with 1 coat of paint. The walls are rectangular, and, according to his measurements, each wall is 10 feet by 15 feet. He will not need to paint the single 3-foot-by-5-foot rectangular window in his room and the 3 -foot-by- 7-foot rectangular door. Sergio knows that each gallon of paint covers between 300 and 350 square feet. If only 1-gallon cans of paint are available, which of the following is the minimum number of cans of paint Sergio needs to buy to paint his walls?\r<BR>\n" );
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document.write( "a) 1    b) 2      c) 3      d) 4   e) 5\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188186 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=188186\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> he has to paint 4 walls.\r<BR>\n" );
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document.write( "each wall is 10 feet by 15 feet.\r<BR>\n" );
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document.write( "the area of each wall is therefore 10 * 15 = 150 square feet.\r<BR>\n" );
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document.write( "4 * 150 = 600 square feet.\r<BR>\n" );
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document.write( "the window is 3 feet by 5 feet = 15 square feet.\r<BR>\n" );
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document.write( "the door is 3 feet by 7 feet = 21 square feet.\r<BR>\n" );
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document.write( "since these do not need to be painted, he subtracts them from the total square feet that have to be painted to get:\r<BR>\n" );
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document.write( "600 - 15 - 21 = 600 - 36 = 564 square feet.\r<BR>\n" );
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document.write( "the maximum coverage for each can is 350 square feet.\r<BR>\n" );
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document.write( "564 / 350 = 1.62.... which means he will need at least 2 cans.\r<BR>\n" );
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document.write( "the minimum coverage for each can is 300 square feet.\r<BR>\n" );
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document.write( "564 / 300 = 1.88 which means he will still need at least 2 cans.\r<BR>\n" );
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document.write( "he has to get 2 cans of paint either way.\r<BR>\n" );
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document.write( "answer is selection b.\r<BR>\n" );
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