document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=817015>Question 817015</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Kiana's average test score after 3 tests was 89%. After the 4th test her average raised to 91%. What was Karina's score on the 4th test? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #492128 by </B><A HREF=/tutors/aboutme.mpl?userid=FightinBlueHens><B>FightinBlueHens(27)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=FightinBlueHens><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=492128\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The first 3 tests that Kiana took, when divided by 3, gives you an average of 89, so if you multiply 89 by 3, you'll find Kiana's score for the first 3 tests added together. <BR>\n" );
document.write( "You need to find what percent Kiana got on her 4th test so you can divide it by 4, to get the new average, which is 91.<BR>\n" );
document.write( "So if the total score after 3 tests is 89x3, that is 267. <BR>\n" );
document.write( "267+y is the total score of Kiana's 4 tests. <BR>\n" );
document.write( "(267+y)/4 is the average of the 4 tests Kiana took, and we know that that's 91, so <BR>\n" );
document.write( "(267+y)/4=91, so you just have to solve for y, which is her new score.<BR>\n" );
document.write( "267+y=91*4<BR>\n" );
document.write( "91*4=364<BR>\n" );
document.write( "267+y=364<BR>\n" );
document.write( "y=97 </SPAN>\n" );
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