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Doing Amortization with AMRT
In this last example we could have entered values other than 1 to PM1 and still get
the same result, as long as the values entered are integer ≥ 1. However, in most
circumstances we should always let PM1 < PM2 whenever possible (see page E-57
of User Guide.)
Example 2 ►>>
th
portion of the 9
payment.
Operation
If you are doing this immediately after Example 1, then all relevant values are still
intact and you can continue; otherwise you should enter those values again.
Enter AMRT mode, scroll down to enter 9 for [PM1], make sure [PM2] is not = 0.
AMRT
Scroll down further to select [INT:Solve] and solve it.
• • •
Therefore the interest portion of this 9
Return to AMRT, and then scroll to select [PRN:Solve] and solve it.
ESC
SOLVE
The calculator indicates that the principal portion of 9
Example 3 ►>>
be repaid with monthly installment over three years. Find the total interest paid in
the 12 payments of the second year.
Operation
Again we begin at CMPD mode to find the monthly payment of the loan.
Enter CMPD mode and make sure calculator displays [Set:End]. Then scroll
down and enter 36 for [n], 3 for [ I% ], (-)35000 for [PV], 0 for [FV], 12 for [P/Y] and
[C/Y].
CMPD
(─)
3
0
EXE
2
EXE
QED Education Scientific
Referring to Example 1, find the interest portion and the principal
9
EXE
SOLVE
th
Lucas borrows $35,000 at
3
6
EXE
5
0
0
1
2
Output: INT = 19.89316037
payment is about $19.90.
Output: PRN = 203.9697351
th
payment is about $203.97. █
3
%
to buy a car. The loan should
j
=
12
3
EXE
0
EXE
EXE
1
Screenshot from Casio TVM
5