Solution: |
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7. |
Monthly payments on this mortgage =
$988.57 |
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Working Notes: |
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The total number of
payments |
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In this case, make one payment per
month for 30 years. This means you will make 360 payments over the
course of the
mortgage
12 x 30 = 360 |
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Calculation a monthly
payment |
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The 4.29% is an annual interest rate. Since all the following
calculations are based on a monthly payment schedule, the annual
rate needs to be converted to a monthly
rate.
The monthly interest rate would be =4.29%/12
=0.3575%
[7% / 12 = 0.583%]. |
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Determining the monthly payment to
account for interest requires a complicated formula shown below:
using formula of present value of annuity as present value of
annuity is equals to total mortgage value. |
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present value of annuity = Px[ 1-1 /(1
+ i)^n)]/ i |
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P=monthly payment |
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i= interest rate per period =
4.29%/12 |
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n= no. Of period = 12 x 30
=360 |
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PV of annuity= Mortgage loan
$200,000 |
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present value of annuity = Px[ 1-1 /(1
+ i)^n)]/ i |
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200,000 = P x
(1-1/(1+(4.29%/12))^360)/(4.29%/12) |
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200,000 = P x
202.3126657778 |
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P=
$200,000/202.3126657778 |
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P=
988.5688532 |
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P=
$988.57 |
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Monthly payment = $988.57 |
Now 2nd
Part |
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For 1st payment, we already know the
total amount is $988.57 monthly payments. To determine how much of
that goes toward interest, we multiply the remaining balance
$200,000 mortgage value by the monthly interest rate: 200,000 x
0.3575% = $715 . The rest goes toward the mortgage balance ($988.57
- $715 = $273.57). So after the first payment, the remaining amount
on the mortgage is $ ($200,000 - $273.57 =
$199,726.43). |
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Here |
Total interest paid during
life mortgage is 155,884.79 |
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Total principle paid during
life mortgage is 200,000 the mortgage amount . |
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Total amount paid is
355,884.79 |
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Computation table is given below of excel |
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Notes: |
Here monthly payments are taken 5 decimals means 988.56885 in
our computation in excel as for convenient it is shown in two
decimal. |
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Payment |
Amount |
Interest @ 0.3575% |
Principal |
Balance |
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200,000 |
1 |
988.57 |
715.00 |
273.57 |
199726.43 |
2 |
988.57 |
714.02 |
274.55 |
199451.88 |
3 |
988.57 |
713.04 |
275.53 |
199176.36 |
4 |
988.57 |
712.06 |
276.51 |
198899.84 |
5 |
988.57 |
711.07 |
277.50 |
198622.34 |
6 |
988.57 |
710.07 |
278.49 |
198343.85 |
7 |
988.57 |
709.08 |
279.49 |
198064.36 |
8 |
988.57 |
708.08 |
280.49 |
197783.87 |
9 |
988.57 |
707.08 |
281.49 |
197502.38 |
10 |
988.57 |
706.07 |
282.50 |
197219.88 |
11 |
988.57 |
705.06 |
283.51 |
196936.37 |
12 |
988.57 |
704.05 |
284.52 |
196651.85 |
13 |
988.57 |
703.03 |
285.54 |
196366.31 |
14 |
988.57 |
702.01 |
286.56 |
196079.75 |
15 |
988.57 |
700.99 |
287.58 |
195792.17 |
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356.00 |
988.57 |
17.48 |
971.09 |
3919.19 |
357.00 |
988.57 |
14.01 |
974.56 |
2944.63 |
358.00 |
988.57 |
10.53 |
978.04 |
1966.59 |
359.00 |
988.57 |
7.03 |
981.54 |
985.05 |
360.00 |
988.57 |
3.52 |
985.05 |
0.00 |
Total |
355884.79 |
155884.79 |
200000.00 |
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Working notes : |
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Payment |
Amount |
Interest @ 0.3575% |
Principal |
Balance |
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200,000 |
1 |
988.57 |
715.00 |
273.57 |
199726.43 |
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[200,000 x .3575%] |
[988.57-715] |
[200,000-273.57] |
Please feel free to ask if anything about above solution in
comment section of the question. |
155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 988.57 514.61 512.92 511.21 509.51 507.80 506.08 54.35 502.62