Calculated Industries 3415, Руководство пользователя

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26 — Q
UALIFIER
P
LUS
® III
X
Finding the Monthly Mortgage (P&I) Payment
Find the monthly P&I (principal and interest) payment on a 30-year,
fixed-rate mortgage of $265,000 at 6.75% annual interest.
STEPS KEYSTROKES DISPLAY
Clear calculator
o o
0.00
Enter loan amount 2 6 5 ) l * 265,000.00
Enter term
3 0 T
30.00
Enter interest
6 • 7 5 ˆ
6.75
Find monthly P&I payment
p
“run” 1,718.78
*Note: Use the ) key to save keystrokes.
What is the new payment, if the interest rate is lowered to 6.5%?
STEPS KEYSTROKES DISPLAY
Enter new interest rate 6 • 5 ˆ 6.50
Find monthly P&I payment
p
“run” 1,674.98
Finding the Interest Rate
Find the interest rate on a mortgage where the loan amount is
$98,500, the term is 30 years, and the payment is $1,150 a month.
STEPS KEYSTROKES DISPLAY
Clear calculator
o o
0.00
Enter loan amount
9 8 5 0 0 l
98,500.00
Enter term 3 0 T 30.00
Enter monthly payment
1 1 5 0 p
1,150.00
Find annual interest
ˆ
“run” 13.78
Find periodic interest
ˆ
1.15
Finding the Term of a Loan
How long does it take to pay off a loan of $15,000 at 10% interest if
you make payments of $200 each month?
STEPS KEYSTROKES DISPLAY
Clear calculator
o o
0.00
Enter loan amount
1 5 ) l
15,000.00
Enter interest
1 0 ˆ
10.00
Enter monthly payment
2 0 0 p
200.00
Find term in years
T
“run” 9.85
Find periodic term T 118.19