Lemma
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OpenStax, Contemporary Mathematics §6.10 Credit Cards · Example 3 · Arithmetic · Money & interest

Credit Cards · Example 3

Compute the interest charged for the credit card based on the given average daily balance (ABD), annual interest rate, and number of days in the billing cycle.

(a) ADB = $2,765.00, annual interest rate 13.99%, billing cycle of 30 days
(b) ADB = $789.30, annual interest rate 17.99%, billing cycle of 31 days
(c) ADB = $1,037.85, annual interest rate 11.99%, billing cycle of 28 days

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OpenStax, Contemporary Mathematics · §6.10 Credit Cards · Example 3

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