please give a detailed solution of the question below.?
477413
Let us suppose interest rate is ‘r’ and the principal amount was ‘P’\nThen for two years;\n\nSimple Interest = 2rP\nCompound interest = P(1+r)^2 – P\nSince we know both the amount of Simple interest and the compound interest we get a set of two simultaneous equations\n\n2rP = 400(1)\nP(1+r)^2 –P = 420(2)\n\nFrom first equation we get \nP=400/2r or P = 200/r\n\nSubstituting in Eq (2)\n\n(200/r)(1+2r+r^2)-200/r = 420\n200/r(1+2r+r^2-1) = 420\n1/r(2r+r^2) = 420/200\n2+r = 420/200\nr = 420/200-2\nr = 2.10-2\nr = 0.10\nSolving for P in eq(1)\nP = 400/2r\nP = 200/r\nP = 200/0.10\nP = 2000\n\nSo the principal amount is 2000.
311639
i don't understand the question...email me at too_cool2kissz_ne1@yahoo.com and break it down 4 me
614837
I already posted this solution (or how to get it).  Do a search of yahoo answers....
291168
this link has the answer
63268
plz repeat ur question and explain more.
616332
I'm sorry, your question is a bit confusing. Please sit down with a dictionary and try to come up with a question that makes sense.
252161
Y. K. Sabharwal, the answer is correct, but you could look at the below link for more information
815405
Sorry, but I don't think there is a way. You can mail this question to danuitti(who has 2180 best answers and appears at the top). He is a genius and he will most certainly find a solution. Good Luck!
552825
elaborate please.sorry i couldnt answer
1166255
Please restate the question. It is very unclear. Thankyou.
226837
Click link below for answers:
94340
I don't think this is the answer you want but look under this web site. It may help.
380004
I don't understand.  Can you explain the problem a little better?
900135
Answer is in the attached link.
302374
If you want detail, then go to the library.  This is too complex for a short Yahoo answer.  There are many thick textbooks on this subject, you should start there!
403573
This is supposed to be a question, i still have not figured it out but thanks for the two points.\n\nIf you have another question please ask it.
694057
Your question is not clear.  Please explain.