Over a 12 -month period, a credit card accrues a total interest of $⁢680 on a $⁢4,000 loan. What is the APR?

For a 12-month period, the APR is the interest divided by the amount borrowed, expressed as a percentage. $680 ÷ $4,000 = 0.17, and 0.17 × 100 = 17%, so the correct choice is 17 percent.

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