document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=572864>Question 572864</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here is the word problem I am trying to write an equation for:\r<BR>\n" );
document.write( "\n" );
document.write( "\" Mike received 73%, 71%, 79% and 75% on his first four math tests.  What grade on his fifth test would allow him to make an average of at least 75%?  Assume the test scores are whole numbers.\"\r<BR>\n" );
document.write( "\n" );
document.write( "Here is what I have tried so far:\r<BR>\n" );
document.write( "\n" );
document.write( "Let X represent fifth test score\r<BR>\n" );
document.write( "\n" );
document.write( "(73 +71+79+75 + X)/5 = 75\r<BR>\n" );
document.write( "\n" );
document.write( "(298 + X)/5 = 75\r<BR>\n" );
document.write( "\n" );
document.write( "59.6 + 1/5X = 75\r<BR>\n" );
document.write( "\n" );
document.write( "X = (75 - 59.6)/5\r<BR>\n" );
document.write( "\n" );
document.write( "X = 3.08\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "I know this is not correct but I am not sure what is wrong with my equation.  Any help showing me how to set up the right equation would really help me.  thanks\r<BR>\n" );
document.write( "\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 #368531 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=368531\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Here is what I have tried so far:\r<BR>\n" );
document.write( "\n" );
document.write( "Let X represent fifth test score\r<BR>\n" );
document.write( "\n" );
document.write( "(73 +71+79+75 + X)/5 = 75\r<BR>\n" );
document.write( "\n" );
document.write( "(298 + X)/5 = 75\r<BR>\n" );
document.write( "\n" );
document.write( "59.6 + (1/5)X = 75\r<BR>\n" );
document.write( "\n" );
document.write( "X = (75 - 59.6)*5\r<BR>\n" );
document.write( "\n" );
document.write( "X = 77\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );