document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=464663>Question 464663</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This is my homework problem: \"$500 was originally invested into an account that earns simple interest. after 3 years the account had a total worth of $650. Write an equation to model the situation and then Find the interest rate.\"\r<BR>\n" );
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document.write( "I have a partial equation of I = (500)(r)(3)<BR>\n" );
document.write( "Or  650 + 500 = R\r<BR>\n" );
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document.write( "My biggest issues is that I honestly do not understand at all what I'm doing with the percent and interest equations. I don't know which one is correct.  <BR>\n" );
document.write( "I Do know that over the three years $150 came into the account at a rate of $50 a year...the problem is I don't know how to convert that knowledge into a percentage.\r<BR>\n" );
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document.write( "Thank you so much for solving this problem for me. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #318753 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=318753\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \"$500 was originally invested into an account that earns simple interest.<BR>\n" );
document.write( " after 3 years the account had a total worth of $650.<BR>\n" );
document.write( " Write an equation to model the situation and then Find the interest rate.\"<BR>\n" );
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document.write( "The interest formula I = P*r*t<BR>\n" );
document.write( "In this problem:<BR>\n" );
document.write( "I = 150<BR>\n" );
document.write( "P = 500<BR>\n" );
document.write( "r = interest rate (which we are to find)<BR>\n" );
document.write( "t = 3 yrs<BR>\n" );
document.write( "so we have:<BR>\n" );
document.write( "150 = 500 * r * 3<BR>\n" );
document.write( "150 = 1500r<BR>\n" );
document.write( "r = 150/1500<BR>\n" );
document.write( "r = .10 which is 10% interest<BR>\n" );
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document.write( "You can confirm this in the interest equation<BR>\n" );
document.write( "I = 500 * .10 * 3<BR>\n" );
document.write( "I = 150<BR>\n" );
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document.write( "Did this make things clear in your mind? You have to agree once you see it, it is not very hard.  </SPAN>\n" );
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