document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=144392>Question 144392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Q1: A,B and C can do a piece of work in 36,24 and 18 days respectively.if A is assisted by B on one day and by C on next day alternatvely, how soon can work be done?<BR>\n" );
document.write( "Q2: what is the compound interest in 2 and half years at 8% on $ 2500?<BR>\n" );
document.write( "Q3:on a certain sum of money the compound interest for 3 years is 480 and simple interest is 460.find the rate of interest and sum of money? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #105146 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=105146\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Q1: A,B and C can do a piece of work in 36,24 and 18 days respectively.if A is assisted by B on one day and by C on next day alternatvely, how soon can work be done?<BR>\n" );
document.write( "A's rate = 1/36 job/day<BR>\n" );
document.write( "B's rate = 1/24 job/day<BR>\n" );
document.write( "C's rate = 1/18 job/day<BR>\n" );
document.write( "--------------------------------<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "Work completed on 1st day: (1/36) + (1/24) = (2+3)/72 = 5/72<BR>\n" );
document.write( "Work completed on 2nd day: (1/36) + (1/18) = (3/36) = 6/72<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "two day total = 11/72 of the job<BR>\n" );
document.write( "1st 6 days : 6(11/72) = 66/72 of the job is completed<BR>\n" );
document.write( "Day 7: A and B complete 5/72 of the job<BR>\n" );
document.write( "Day 8: A and C complete the job.<BR>\n" );
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document.write( "Q2: what is the compound interest in 2 and half years at 8% on $ 2500?<BR>\n" );
document.write( "A(2.5) = 2500(1+0.08)^2.5<BR>\n" );
document.write( "A(2.5) = $3030.40<BR>\n" );
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document.write( "Q3:on a certain sum of money the compound interest for 3 years is 480 and simple interest is 460.find the rate of interest and sum of money?<BR>\n" );
document.write( "Two equations:<BR>\n" );
document.write( "Simple interest: Pr3 = 460<BR>\n" );
document.write( "Compound interest: P[(1+r)^3 - 1) = 480<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Solve for r and for P<BR>\n" );
document.write( "============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );