the formula for simple interest is I=PRT (interest=principal x rate x time )
you find the formula... then you calculate it. Its that simple.
6.5%Formula for finding Simple InterestSI [Interest] = (P×R×T)/100P [sum] = (SI×100)/(R×T)R [Rate/year] = (SI×100)/(P×T)T [Time] = (SI×100)/(P×R)whereS.I. = Simple Interest,P = Principal or Sum of amount,R = % Rate per annum,T = Time Span
simple interest = principle (money) times the rate times the time
f(x)= mx+b for simple interest t(n)= abx for compound interest
Simple interest is obtained where you take the interest every year/set period as opposed to compund interest where interest is calculated on the previous answer.For Example: Adding 10% Interest, Starting With 100.Simple: 100, 110, 120, 130...Compund: 100, 110, 121, 133.1...
The formula for simple interest is: A=P(1+rt)
The answer for rate in simple interest is =rate= simple interest\principle*time
PxRxT 100
You need to know the principal amount, the rate and the time. Then a very simply formula for calculating interest is I = PRT where P is the principal amount, R is the interest rate and T is the period of time in years.
i=prt FACT: If an annual interest rate is given, time in the simple interest formula must be expressed in terms of years.
P(r/100)^2
There are many simple interest calculators online that you can find. I found the one at http://easycalculation.com/simple-interest.php to be simple and accurate.
To find simple interest, you can use the formula: ( \text{Interest} = P \times r \times t ), where ( P ) is the principal amount (the initial sum of money), ( r ) is the annual interest rate (as a decimal), and ( t ) is the time the money is invested or borrowed for, in years. Multiply these three values together to calculate the total interest earned or paid over that period.
The first money lender, of course!
I = prt where I = interest, p = principal, r = rate. and t = time in years.
I= Prt I=interest P=principal r=rate t=time
To calculate the principal, you need to rearrange the formula for simple interest or compound interest, depending on the context. For simple interest, the formula is (I = P \times r \times t), where (I) is the interest earned, (r) is the interest rate, and (t) is the time. To find the principal (P), you can rearrange it to (P = \frac{I}{r \times t}). For compound interest, you would typically use the formula (A = P(1 + r/n)^{nt}) and solve for (P) by rearranging it to (P = \frac{A}{(1 + r/n)^{nt}}), where (A) is the total amount after interest.