document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=371294>Question 371294</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can you explain the correct way to work this systems of linear equations word problem out?  Thanks! \r<BR>\n" );
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document.write( "Problem:  A bricklayer begins work at 7 a.m., laying 170 bricks per hour. Two hours later his apprentice joins him and lays 80 bricks per hour. At what time will they have laid 965 bricks?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #264507 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=264507\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Problem: A bricklayer begins work at 7 a.m., laying 170 bricks per hour. Two hours later his apprentice joins him and lays 80 bricks per hour. At what time will they have laid 965 bricks?<BR>\n" );
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document.write( "Apprentice DATA:<BR>\n" );
document.write( "rate = 80 b/h ; time = x hrs ; work done = 80x bricks<BR>\n" );
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document.write( "Bricklayer DATA:<BR>\n" );
document.write( "rate = 170 b/h ; time = x+2; ; work done = 170(x+2) bricks<BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "bricks + bricks = 965 bricks <BR>\n" );
document.write( "80x + 170(x+2) = 965<BR>\n" );
document.write( "80x + 170x + 340 = 965<BR>\n" );
document.write( "250x = 625<BR>\n" );
document.write( "x = 2.5 hrs<BR>\n" );
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document.write( "x+2 = 4.5 hrs<BR>\n" );
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document.write( "Time: 7 am + 4.5 hrs = 11:30 am (time they finish the work)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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