Gene paid a deposit on a leased car. The deposit earns 2.8 percent simple annual interest. At the end of the year, the interest that is earned is $22.40. What was the amount of the original deposit?

Use the simple-interest formula I = Prt, where I is the interest, P is the original deposit, r = 0.028, and t = 1 year. Solving gives P = 22.40 ÷ (0.028 × 1) = $800.00. Therefore, the original deposit was $800.00, choice D.

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