Respuesta :
Using simple interest, it is found that she has to pay $24,300 more in interest.
The amount of money after t years, in simple interest, is given by:
[tex]A(t) = P(1 + kt)[/tex]
In which:
- P is the principal.
- k is the interest rate, as a decimal.
- t is the time, in years.
In this problem:
- Loan of $45,000, thus [tex]P = 45000[/tex].
- 6 years, thus [tex]t = 6[/tex].
The amount with 15% interest is:
Here, [tex]k = 0.15[/tex]
[tex]A(6) = 45000[1 + 0.15(6)] = 85,500[/tex]
The amount with 6% interest is:
Here [tex]k = 0.06[/tex].
[tex]A(6) = 45000[1 + 0.06(6)] = 61,200[/tex]
The difference is:
85,500 - 61,200 = 24,300
She has to pay $24,300 more in interest.
A similar problem is given at https://brainly.com/question/24989537
Answer:
I cracked the code on my journey to find the correct answer to this problem
The answer is D or $14,814.00
Step-by-step explanation:
This is more than simple interest, this is something to do with amortization
this is a monthly payment calculator for a car loan
[tex]A=p\cdot\frac{\left(r\left(r+1\right)^{n}\right)}{\left(\left(1+r\right)^{n}-1\right)}\\[/tex]
This isn't exactly what we are looking for since we aren't looking for monthly payments but this can still help.
So our variables are [tex]p=45,000[/tex], where p is for principle
r is the loan rate in monthly terms or divide the interest by 12 which is [tex]r=0.0125[/tex] for when 15% is interest and [tex]r=0.0005[/tex] when 6% is interest.
and n is years times 12 or monthly periods involved so [tex]n=72[/tex]
so our equation is [tex]45000\cdot\frac{\left(0.00125\left(0.00125+1\right)^{72}\right)}{\left(\left(1+0.00125\right)^{72}-1\right)}[/tex]
which is equal to 951.53
This number is our monthly payment
so for the full cost is [tex]951.53*12*6[/tex]
that equals 68510.16
now for when interest is equal to 6%
[tex]45000\cdot\frac{\left(0.0005\left(0.0005+1\right)^{72}\right)}{\left(\left(1+0.0005\right)^{72}-1\right)}[/tex]
this is equal to [tex]745.78*12*6[/tex]
so for the full cost is
so the extra interest is equal to the larger number minus the smaller one
[tex]68510.16-53696.16[/tex]
which equals
14,814.00 exactly
*mic drop