2014 AMC12B 真题

2014 AMC12B

Problem 1

Leah has coins, all of which are pennies and nickels. If she had one more nickel than she has now, then she would have the same number of pennies and nickels. In cents, how much are Leah's coins worth?

Leah 有 13 枚硬币，它们都是 分或者 分硬币。假设她比现在再多一枚 分硬币，那么她拥 1 5 5 有的 分硬币和 分硬币的数目就一样多了，那么她现在所拥有的所有硬币总共价值多少？ 5 1

Problem 2

1 Orvin went to the store with just enough money to buy balloons. When he arrived he discovered that the store had a special sale on balloons: buy balloon at the regular price and get a second at off the regular price. What is the greatest number of balloons Orvin could buy?

Orvin 带着足够多的钱去商店买 30 只气球，当他到达商店，发现商店正在对气球做促销降价

1

活动：以原价买一只气球，那么第二只气球降价 ， 问 Orvin 最多可以买到多少只气球？

Problem 3

Randy drove the first third of his trip on a gravel road, the next miles on pavement, and the remaining one-fifth on a dirt road. In miles, how long was Randy's trip?

Randy 在石子路上行驶了他总路程的前三分之一，接下来的 20 英里走的是石板路，最后剩下 的总路程的五分之一走的是泥路。问 Randy 的总路程是多少英里？