Question

Portia 的高中学生数是 Lara 的高中的 $3$ 倍。两所高中一共有 $2600$ 名学生。Portia 的高中有多少名学生？

Portia's high school has $3$ times as many students as Lara's high school. The two high schools have a total of $2600$ students. How many students does Portia's high school have?

$600$

$650$

$1950$

$2000$

$2050$

答案：C

知识点：比与比例一次方程

难度评级：560

解答：

设 Lara 的学校有 $x$ 名学生，则 Portia 的学校有 $3x$ 名学生。

因此所以 $3x = 1950$ 。 $\begin{aligned} 3x + x &= 2600 \\ x &= 650. \end{aligned}$

所以正确答案是 C。

Let $x$ be the number of students in Lara's high school. Then Portia's high school has $3x$ students.

Therefore, $\begin{aligned} 3x + x &= 2600 \\ x &= 650. \end{aligned}$ Then $3x = 1950.$

Thus, C is the correct answer.

2021 AMC 10A Spring 第 2 题

答案：C

难度评级：560

解答：

其他年份的第 2 题