2015 AMC12B 真题

Problem 1

= What is the value of ?

Problem 2

Marie does three equally time-consuming tasks in a row without taking breaks. She begins the first task at 1:00 PM and finishes the second task at 2:40 PM. When does she finish the third task?

Marie 连续做了 项耗时相同的任务，中间没有休息，她从下午 3 1:00 开始做第一个任务，在 下午 2:40 完成第二个任务，她何时完成第三个任务？

(A) 3:10 PM (B) 3:30 PM (C) 4:00 PM (D) 4:10 PM (E) 4.30 PM

Problem 3

Isaac has written down one integer two times and another integer three times. The sum of the five numbers is 100, and one of the numbers is 28. What is the other number?

Isaac 把一个整数写了 遍，另一个整数写了 遍。这 个数之和为 2 3 5 100 ，其中一个数是 28 ， 另一个数是多少？

(A) 8 (B) 11 (C) 14 (D) 15 (E) 18

2015 AMC12B