2011 AMC12A 真题

2011 AMC12A

Problem 1

A cell phone plan costs dollars each month, plus cents per text message sent, plus cents for each minute used over hours. In January Michelle sent text messages and talked for hours. How much did she have to pay?

一种手机套餐每个月有 20 美元的固定费用。此外，每条短信收取 美分，语音通话超过 5 30 小时的部分，每分钟收取 10 美分。 Michelle 在 月份共发送了 1 100 条短信，拨打了 30.5 小时 语音通话，问她需要支付多少美元？

(A) 24.00 (B) 24.50 (C) 25.50 (D) 28.00 (E) 30.00

Problem 2

There are coins placed flat on a table according to the figure. What is the order of the coins from top to bottom?

下图显示了平放在桌子上的 枚硬币。那么硬币从上到下的顺序分别为什么？ 5

(A) (C.A,E, D, B) (B) (C,A;D.E, B) (D) (G,E,A,D, B)

Problem 3

A small bottle of shampoo can hold milliliters of shampoo, whereas a large bottle can hold milliliters of shampoo. Jasmine wants to buy the minimum number of small bottles necessary to completely fill a large bottle. How many bottles must she buy?

一个小瓶洗发水可以装 35 毫升洗发水，而一个大瓶洗发水可以装 500 毫升洗发水。 Jasmine 想买最少数量的小瓶洗发水来装满一大瓶，她必领买多少小瓶？

(A) 11 (B) 12 (C) 13 (D) 14 (E) 15