document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=805518>Question 805518</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A carpenter charges $42 per hour for his time and $24 per hour for his apprentice's time. On a certain job the apprentice does some preparatory work alone and then the carpenter finishes the job alone. If the job took a total of 10 hours and the total bill was $325.5, how long did the carpenter work ?<BR>\n" );
document.write( "Select the correct answer.<BR>\n" );
document.write( "	a.	 4.75 hours<BR>\n" );
document.write( "	b.	 6.25 hours<BR>\n" );
document.write( "	c.	 5.75 hours<BR>\n" );
document.write( "	d.	 5.25 hours<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #485281 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=485281\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x= 	Number of	hours carpenter worked						<BR>\n" );
document.write( "y=	Number of	hours apprentice worked						<BR>\n" );
document.write( " 								<BR>\n" );
document.write( "1    	x	+	1    	y	=	10    	.............1	<BR>\n" );
document.write( "Total value								<BR>\n" );
document.write( "42    	x	+	24    	y	=	325 1/2	.............2	<BR>\n" );
document.write( "Eliminate	y							<BR>\n" );
document.write( "multiply (1)by		-24    						<BR>\n" );
document.write( "Multiply (2) by		1    						<BR>\n" );
document.write( "-24    	x		-24    	y	=	-240    		<BR>\n" );
document.write( "42    	x	+	24    	y	=	325 1/2		<BR>\n" );
document.write( "Add the two equations								<BR>\n" );
document.write( "18    	x				=	85 1/2		<BR>\n" );
document.write( "/	18    							<BR>\n" );
document.write( "x	=	4 3/4						<BR>\n" );
document.write( "plug value of			x	in (1)				<BR>\n" );
document.write( "1    	x	+	1    	y	=	10    		<BR>\n" );
document.write( "4 3/4		+		y	=	10    		<BR>\n" );
document.write( "				y	=	10    		-4 3/4<BR>\n" );
document.write( "				y	=	5 1/4		<BR>\n" );
document.write( "				y	=	5 1/4		<BR>\n" );
document.write( "x=	4 3/4		Number of	hours carpenter worked				\r<BR>\n" );
document.write( "\n" );
document.write( "4.75 hours	<BR>\n" );
document.write( "m.ananth@hotmail.ca								<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );