试题类型 Mathematics > Standard Multiple Choice Read the following SAT test question and then click on a button to select your answer. A person bought 12 cards for 30 cents. If the next day the price of the cards was 5 cents each, how much did the person save per card by buying at the earlier price? Answer Choices (A) 2 cents (B) 2.5 cents (C) 3 cents (D) 3.5 cents (E) 5 cents Answer:B Explanation You can find the savings per card by subtracting the price per card on the earlier day from the price per card on the later day. Since 12 cards cost 30 cents on the earlier day, the price per card was 30 divided by 12, or 2.5 cents. The price per card on the later day was 5 cents, so 5cents -2.5cents) = 2.5cents is the amount saved per card by buying at the earlier price.

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