document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=202289>Question 202289</A>: <I><SPAN STYLE=\"word-break: break-all;\"> hi, i find these question's extremley difficult.....so can you plzz show me how to solve these questions....thanks\r<BR>\n" );
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document.write( "1) A chemist mixes a 20% solution and a 50% solution to obtain a 40% solution.  If 300g of solution was obtained, how much of each type of the original solutions were used?\r<BR>\n" );
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document.write( "2)It took Terry 7 hours to drive the 390 km from Cold Bay to Hot Lake.  For the first part of the trip he averaged 60 km/h, but was forced to slow down for the remainder of the trip to 50km/h.<BR>\n" );
document.write( "(a)  How many hours did Terry spend driving at each speed? \r<BR>\n" );
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document.write( "3)How can you tell by looking at an equation whether it has one, none or infinite solutions?	 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #152544 by </B><A HREF=/tutors/aboutme.mpl?userid=rfer><B>rfer(16322)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rfer><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=152544\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A)<BR>\n" );
document.write( ".2x+.5(300-x)=.4(300)<BR>\n" );
document.write( ".2x+150-.5x=120<BR>\n" );
document.write( "-.3x=-30<BR>\n" );
document.write( "x=100<BR>\n" );
document.write( "20% solution =100 g<BR>\n" );
document.write( "50% solution =300-100=200g<BR>\n" );
document.write( "B)<BR>\n" );
document.write( "4 hrs at 60<BR>\n" );
document.write( "3 hrs at 50<BR>\n" );
document.write( "see if you can put the equation together </SPAN>\n" );
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