Question

Miki 有一打大小相同的橙子和一打大小相同的梨。Miki 用榨汁机从 $3$ 个梨中榨出 $8$ 盎司梨汁，从 $2$ 个橙子中榨出 $8$ 盎司橙汁。她用相同数量的梨和橙子制作梨橙混合果汁。混合果汁中梨汁占百分之多少？

Miki has a dozen oranges of the same size and a dozen pears of the same size. Miki uses her juicer to extract $8$ ounces of pear juice from $3$ pears and $8$ ounces of orange juice from $2$ oranges. She makes a pear-orange juice blend from an equal number of pears and oranges. What percent of the blend is pear juice?

$30$

$40$

$50$

$60$

$70$

答案：B

知识点：混合问题百分数

难度评级：1610

解答：

使用 $6$ 个梨和 $6$ 个橙子，这样两种水果数量相同。

因为 $3$ 个梨榨出 $8$ 盎司， $6$ 个梨榨出 $16$ 盎司。因为 $2$ 个橙子榨出 $8$ 盎司， $6$ 个橙子榨出 $24$ 盎司。

混合果汁总量为 $16+24=40$ 盎司，其中 $16$ 盎司是梨汁。梨汁百分比为 $16/40=40\%$ 。

所以正确答案是 B。

Use $6$ pears and $6$ oranges, which is an equal number of each fruit.

Since $3$ pears make $8$ ounces, $6$ pears make $16$ ounces. Since $2$ oranges make $8$ ounces, $6$ oranges make $24$ ounces.

The blend has $16+24=40$ ounces total, of which $16$ ounces is pear juice. The pear-juice percent is $16/40=40\%$ .

Thus, B is the correct answer.

2002 AMC 8 第 24 题

答案：B

难度评级：1610

解答：

其他年份的第 24 题