Interest Cost for Reza D. ($686.25 @ 18¾% p.a.)

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SUMMARY

Reza D. incurred interest charges on an outstanding credit card balance of $686.25 at an annual interest rate of 18¾% for a duration of 35 days. The interest calculation, based on the daily compounding method, resulted in a total interest payment of approximately $10.70. Consequently, Reza's total payment to the credit card company amounted to $696.95, which includes both the principal and the accrued interest.

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.A certain credit card company charges interest at 18¾% p.a. Reza D. had an outstanding balance of $686.25 on his credit card for 35 days, at which time he paid everything that he owed to the company. How much interest did Reza have to pay, and how much did he pay in total?
 
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sillypoodle said:
.A certain credit card company charges interest at 18¾% p.a. Reza D. had an outstanding balance of $686.25 on his credit card for 35 days, at which time he paid everything that he owed to the company. How much interest did Reza have to pay, and how much did he pay in total?

link to the compound interest formula ...

Compound InterestFYI, credit card companies usually charge interest compounded daily. Some use 360 days in a year to slightly increase their interest charge.
 

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