00:01
So the relationship between maturity value f and present value or principle invested is that f is equal to p times 1 plus your interest rate r to the t.
00:14
The t is the number of years of your investment.
00:19
And r is the interest rate as a decimal.
00:33
And then let's see here.
00:35
We have our interest amount.
00:37
It's going to be the maturity value minus the amount invested.
00:42
And your interest rate is going to be, let's see here, f divided by p to the 1 over t minus 1.
01:02
And i derived that from this formula here.
01:04
So if i have my table here, p, r, t, i, n, f.
01:18
For the first one i have 8 ,000.
01:21
I have 8 % which is 0 .08 as a decimal.
01:25
I have six years.
01:26
I have a future value of...
01:30
No, it doesn't tell me.
01:32
Okay.
01:34
So then the future value is going to be 8 ,000 times 1 .08 to the sixth which is equal to $12 ,694 .99.
01:53
That means that your interest is going to be the difference between this and this which is $4 ,694 .99.
02:05
And then for the second row i have 5 ,000 here.
02:11
I have 6 ,000 here.
02:14
I have one month as my time, so that is 1 12th of a year.
02:20
My interest then is going to be this amount minus that amount...