The APR for loans can also be approximated (however, not within the  1 4  of 1% accuracy required by Regulation Z†) by using the following formula: APR =  2mI P(n + 1)  where m  =  the number of payment periods per year I  =  the interest (or finance charge) P  =  the principal (amount financed) n  =  the number of periodic payments to be made. Thus, if  m = 12, I = $264, P = $1200 and n = 30, APR =  2mI P(n + 1) =  2 × 12 × 264 1200 × 31 = 17%. Use the APR formula to find the APR to one decimal place. (Assume m = 12.) Amount Financed   Finance Charge   Number of Payments $4000   $332   12  % State the difference between the answer obtained by the formula and the answer obtained using the True Annual Interest Rate (APR) table. (Round your answer to one decimal place.)  %

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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The APR for loans can also be approximated (however, not within the 

1
4

 of 1% accuracy required by Regulation Z†) by using the following formula:

APR = 
2mI
P(n + 1)
 

where

m  =  the number of payment periods per year
I  =  the interest (or finance charge)
P  =  the principal (amount financed)
n  =  the number of periodic payments to be made.

Thus, if 

m = 12, I = $264, P = $1200 and n = 30,
APR = 
2mI
P(n + 1)
 = 
2 × 12 × 264
1200 × 31
 = 17%.

Use the APR formula to find the APR to one decimal place. (Assume m = 12.)

Amount
Financed
 
Finance
Charge
 
Number of
Payments
$4000
 
$332
 
12

 %

State the difference between the answer obtained by the formula and the answer obtained using the True Annual Interest Rate (APR) table. (Round your answer to one decimal place.)
 %

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