how do you multiply to figure house interest?
411899
Hi-- I posted this on your other question also: \n\n http://www.dinkytown.net/\n\nI use their calculators to figure out how far ahead I am when I make extra principal payments on my mortgage, but they have over 250 types of calculators for all sorts of financial scenarios.
968929
The shorter the interest term the faster it grows as the principal grows more quickly so you get more interest on your interest\n\nFor example lets look at the interest gained over 1 year on an interest rate of 12% per annum\n\nYearly: Well at the end of the year A = 1.12*P\nSo interest gained = 1.12*P - P = 0.12*P\n\nHalf Yearly: Well at the end of the year A = (1.06)*(1.06)*P (because the interest is applied each 6 months\n= (1.06)² * P\n= 1.1236*P\nSo interest gained = 1.1236*P - P = 0.1236*P > 0.12P\n\nQuarterly: Well at the end of the year A = (1.03)*(1.03)*(1.03)*(1.03)*P \n= (1.03)^4 * P\n≈ 1.1255P\nSo interest gained = 1.1255*P - P = 0.1255*P > 0.1236P\n\nMonthly: Well at the end of the year A = (1.01)*(1.01)* ... *(1.01)*(1.01)*P \n= (1.01)^12 * P\n≈ 1.1268P\nSo interest gained = 1.1268*P - P = 0.1268*P > 0.1255P\n\nDaily: Well at the end of the year A = (1.0003288)*(1.0003288)* ... *(1.0003288)*P \n= (1.0003288)^365 * P\n≈ 1.1275P\nSo interest gained = 1.1275*P - P = 0.1275*P > 0.1288P\n\nNow while it may not sound like much over 1 year over 20 years it can become significant\n\nJust quickly over 20 years\n\nYearly: Interest = ((1.12)^20 -1)*P = 8.6463*P\nHalf Yearly: Interest = ((1.06)^40 - 1)*P = 9.2857*P\nQuarterly: Interest = ((1.03)^80 - 1)*P = 9.6409*P\nMonthly: Interest = ((1.01)^240 - 1)*P = 9.8926*P\nDaily: Interest (using 365.25 days per year to account for leap years)= ((1.0003285)^365.25*20 - 1)*P = 10.0154*P
487839
Need to know how much you invested at what interest rate first.
653412
(future value/present value)^(1/time)\n\nSo using your example, (200,000/$100,000)^(1/5) or the fifth root of 2, which is 1.148698 or 14.8698%.\n\nTo use your example, 1.148698 x 1.148698 x 1.148698 x 1.148698 x 1.148698 =2\n\nJust be careful with your units of time.  If you had found the monthly rate, you could not multiply it by twelve to find the annual rate, you would take it to the twelth power.\n\nOne simpler method, that is approximately correct is the rule of 72.  You can estimate most rates by dividing 72/time.  In this case it would give you 14.4.  It comes in handy when you don't have a calculator on hand.  See the wikipedia article on why it works.
255187
sn777 is correct\n750 x .0125= 9.375 (for one month)\n9.375 x 6= 56.25 (for 6 months interest)\nadd your principle to interest:\n750+56.25 =  806.25 total due\n\nGen, $4 in interest total?
1146788
The formula for compound interest calculation is  \nFuture Value = Principal (1 + monthly interest rate*12/100 )^no. of years\nHence $100 would become = 100(1+ 1.67*12/100)^5\n= $ 100(1+20.04/100 )^5\n= $ 100 ( 1.2004)^5\n= $ 100 * 2.4924697\n= $ 249.25 (rounded to two decimals)
57320
You're forgetting that interest is often tax-deductible. If you can take advantage of that, you aren't paying as much. And yes, some houses can double or triple in value in a relatively short amount of time. It all depends on where you buy.
111334
If you are looking for interest only, here is the formula:\n\n((Loan Amount) x (Interest Rate))/12 = Monthly Payment.\nIf you are looking for fully amortized, the best way to do it is find a mortgage calculator on the internet.  \n\nMy website has one.  http://www.eastbaylending.com
756787
If 0.25% hike in interest requires £13 pm extra, \nthis means 13x12 = 156 pa. \nTherefore the annual interest for 7% is \n\n156 / 0.25 x 7 = £4368
890824
I haven't seen the original question, but I'm guessing that $817 must be added to $9999 to find the total amount interest is being charged on. If my guess is correct, then p = 10816.  Use t=3.  You only need to use 36 months if, after working out the interest, you have to calculate a monthly payment.  You would then add the interest to p, and divide by 36 to find the monthly repayment.
39368
Compound Interest= Principal Amount{1+(rate of intersest/100)^Numebr of years}\nFor you it will be\n21000=5000*(1+r/100)^5\n=>4.2=(1+r/100)^5\n=>1.33=1+r*0.01\n=>r=33%
853233
Divide the yearly interest by the principal to determine the rate.\n\nAssuming simple interest, you'd get 275 ÷ 2500 = 11%\n\n~ ♥ ~
297329
one formula you can use is\n\nF = P(1 + i)^n\nwhere,\n\nF = future worth of the money\nP = present worth of the money\ni = interest rate\nn = number of years\n\nsince the future worth of the money will be twice of the present worth, then we can say that,\n\nF = 2P\n\nusing this in the formula you'll come up with,\n\n-> 2P = P(1 + i)^n  \n(divide the whole equation by P)\n-> 2 = (1 + i)^n \n(n is 20 years)\n-> 2 = (1 + i)^20\n(raising the whole equation by 1/20)\n-> 2^(1/20) = 1 + i\n-> 1.035264 = 1 + i\n-> i = 0.035264\n-> i = 3.5264%
467046
Not a problem:\nhttp://www.mortgage-calc.com/\n\nQuick, easy calculator
328449
There are 2 different formulas\n\nCompound Interest\nI = P(1 + r)^t\n\nCompounded Interest, and by this i mean compounded daily, weekly, monthly, yearly, etc...\nI = P(1 + (r/n))^(nt)\n\nCompounded Continously\nI = Pe^(rt)\n\nI = Interest\nP = Principle\nr = Rate\nt = Time
845341
The formula for continuously compounded interest is\nA = P e^(rt) where A = final amount, P = principal (initial amount), r = interest rate as a decimal, and t = time in years.  e is a mathematical constant.\n\nFor your equation, A = 4634 e^(0.08X4) = 4634e^0.32 = 6381.61\n\nSo the interest earned is 6381.61- 4634.00 = 1747.61\n\n\nTo find the effective rate, choose an arbitrary amount, say $100, that you can easily find 16% of.  Then find the actual interest.  The formula for quarterly compounding is\n\nA = P(1 + r/n)^(nt)  where all are as above and n = number of compoundings per year; here n = 4\n\nA = 100(1 + 0.16/4)^(4X1) = 116.98\n\nSo you actually earned 16.98 in interest which would be 16.98% of 100 so 16.98 is the effective yield.
500285
Go to www.realtor.com \n\nthey have a mortgage calculator. you can change the price of the house, the down payment, and the interest rate.