Question

Ike 和 Mike 走进一家三明治店，总共有 $\$30.00$ 可以花。三明治每个 $\$4.50$ ，汽水每杯 $\$1.00$ 。Ike 和 Mike 计划尽可能多买三明治，并用剩下的钱买汽水。把汽水和三明治都算上，他们会买多少件商品？

Ike and Mike go into a sandwich shop with a total of $\$30.00$ to spend. Sandwiches cost $\$4.50$ each and soft drinks cost $\$1.00$ each. Ike and Mike plan to buy as many sandwiches as they can, and use any remaining money to buy soft drinks. Counting both soft drinks and sandwiches, how many items will they buy?

$6$

$7$

$8$

$9$

$10$

答案：D

知识点：钱币最优化

难度评级：450

视频讲解：

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文字解答：

买 $6$ 个三明治需要 $6 \times 4.5 = 27$ 美元，已经不能再买一个三明治。

剩下 $30 - 27 = 3$ 美元，可以买 $3$ 杯汽水。商品总数为 $6 + 3 = 9$ 。

正确答案是 D。

If they buy $6$ sandwiches, they would spend $6 \times 4.5 = 27$ dollars. This means that they would not be able to buy any more sandwiches.

They would then have $30 - 27 = 3$ dollars left. With this, they could buy $3$ sodas. They would therefore buy a total of $6 + 3 = 9$ items.

Thus, the correct answer is D.

2019 AMC 8 第 1 题

答案：D

难度评级：450

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文字解答：

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