Question

十二个朋友在 Oscar's Overstuffed Oyster House 共进晚餐，每人点了一份餐。餐量非常大，足够 $18$ 个人吃。如果他们共享食物，为了刚好够这 $12$ 个人吃，他们本应点多少份餐？

Twelve friends met for dinner at Oscar's Overstuffed Oyster House, and each ordered one meal. The portions were so large, there was enough food for $18$ people. If they shared, how many meals should they have ordered to have just enough food for the $12$ of them?

$8$

$9$

$10$

$15$

$18$

答案：A

知识点：比与比例

难度评级：560

解答：

$12$ 份餐能喂饱 $18$ 个人，所以一份餐能喂饱 $\dfrac{18}{12} = \dfrac{3}{2}$ 个人。

因此 $12$ 个人需要 $12 \div \dfrac{3}{2} = 8$ 份餐。

所以正确答案是 A。

Note that $12$ meals feed $18$ people. This means that one meal feeds $\dfrac{18}{12} = \dfrac{3}{2}$ people.

This means that they need $12 \div \dfrac{3}{2} = 8$ meals for $12$ people.

Thus, A is the correct answer.

2004 AMC 8 第 3 题

答案：A

难度评级：560

解答：

其他年份的第 3 题