Sal and Jen went to the store together, and each bought the same car stereo.Sal used a card to make the purchase, and the full amount was immediately withdrawn from his bank account.Jen used a card to make the purchase, and she received a bill within 15 days of the purchase. She paid $21.30 for the next 18 months until the bill was paid in full. The full payment included $58.60 in interest.Which statement describes Sal’s purchase?
Answer
A
Sal used a debit card and paid a total of $383.40 for the stereo.
B
Sal used a debit card and paid a total of $324.80 for the stereo.
C
Sal used a credit card and paid a total of $383.40 for the stereo.
D
Sal used a credit card and paid a total of $324.80 for the stereo.
Explanation
Jen paid 18 × $21.30 = $383.40 in total. Since $58.60 of that was interest, the stereo itself cost $383.40 − $58.60 = $324.80. Sal’s payment was immediately withdrawn from his bank account, which describes a debit-card purchase, so he paid $324.80.
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