00:01
You have $10 ,000 and can deposit either today or 10 years from today.
00:05
And to determine how much better off you'll be after 40 years, if you deposit it today, we'll compare the future value of each option.
00:11
So the first is deposited today.
00:14
The future value is equal to the present value times 1 plus the interest rate to the number of years.
00:21
So the future value, if you deposit today, the 10 ,000 is the initial or present value.
00:29
The interest rate is 9%.
00:31
So that's 0 .09 as a decimal.
00:35
And you'll have it for 40 years.
00:40
And so that is going to become $314 ,094 .20.
00:52
If you wait 10 years later, then you have 1 plus .09 for 30 years.
01:04
And that is 132 ,67678.
01:12
And so to find the difference, let's just subtract.
01:29
That would be 181 ,417 and 42.
01:45
The person invests $10 ,000 for number two at a 6 % annual return for 18 years.
01:51
Okay.
01:54
So the future value would be deposit, the present value of 10, a 6 % rate for 18 years.
02:05
10 ,000 times 1 .06 to the 18th is about $28 ,543 .39.
02:16
Cents.
02:21
Number three, you're depositing $100 per month at a monthly return of 0 .85 % for 18 years.
02:30
Okay, so now in this case, we've got a monthly deposit of 100.
02:36
The monthly interest rate of 0 .85 divided by 12 would be, so this formula would be p...