document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=896556>Question 896556</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A student received scores of 72, 85, 53 and 80 on the first four quizzes. What minimum score does the student need on the fifth quiz to average 70 for all 5 quizzes? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #543599 by </B><A HREF=/tutors/aboutme.mpl?userid=vja_1994><B>vja_1994(6)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vja_1994><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=543599\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First add all the received scores:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=72%2B85%2B53%2B80=290 ALIGN=MIDDLE  ALT=\"72%2B85%2B53%2B80=290\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Let x be the score of the fifth quiz.<BR>\n" );
document.write( "We know the student wants an average of 70 for all 5 quizzes, yet he has only taken 4 quizzes.<BR>\n" );
document.write( "(Average of 5 quizzes)=(total score of all 5 quizzes)/(# of quizzes)<BR>\n" );
document.write( "When you plug in the values you know it will look like this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=70=%28%28290%2Bx%29%2F5%29 ALIGN=MIDDLE  ALT=\"70=%28%28290%2Bx%29%2F5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solve for x:<BR>\n" );
document.write( "Multiply each side of the equation by 5.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=70%2A5=%28%28290%2Bx%29%2F5%29%2A5 ALIGN=MIDDLE  ALT=\"70%2A5=%28%28290%2Bx%29%2F5%29%2A5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=350=290%2Bx ALIGN=MIDDLE  ALT=\"350=290%2Bx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Subtract 290 from each side of the equation.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=350-290=%28290%2Bx%29-290 ALIGN=MIDDLE  ALT=\"350-290=%28290%2Bx%29-290\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=60=x ALIGN=MIDDLE  ALT=\"60=x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "The student will need a 60 on his fifth quiz to achieve an average of 70 for all 5 quizzes.\r<BR>\n" );
document.write( "\n" );
document.write( "-Alejandro </SPAN>\n" );
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