document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1040789>Question 1040789</A>: <I><SPAN STYLE=\"word-break: break-all;\"> nelson has taken two math test, he studied for 1.5 hours and scored a 78%. on the second test he studied for 4 hours and scored a 92%. what was the rate if change in score per hour studied? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #655698 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=655698\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> change in score = 92 - 78 = 14 percentage points<BR>\n" );
document.write( "change in hours = 4 - 1.5 = 2.5 hours\r<BR>\n" );
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document.write( "Divide the change in score over change in hours\r<BR>\n" );
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document.write( "(change in score)/(change in hours) = 14/2.5 = 5.6\r<BR>\n" );
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document.write( "The units here are percentage points per hour. <BR>\n" );
document.write( "So the final overall answer is that the rate of change is <font color=red>5.6 percentage points per hour</font>\r<BR>\n" );
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document.write( "What does this mean? It means that for every hour studied, the score has been improved by 5.6 percentage points </SPAN>\n" );
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