Question

数轴上各标记点之间的距离相等。 $y$ 是多少？

If the markings on the number line shown are equally spaced, what is the number $y?$

$3$

$10$

$12$

$15$

$16$

从 $0$ 到 $20$ 被分成 $5$ 个相等间隔，所以每个间隔的长度是 $\frac{20}{5} = 4$ 。

$y$ 距 $0$ 有 $3$ 个间隔，所以 $y = 3 \times 4 = 12$ 。

所以正确答案是 C。

From $0$ to $20$ there are $5$ equal spaces, so each space is $\frac{20}{5} = 4.$

The mark labeled $y$ is $3$ spaces from $0,$ so $y = 3 \times 4 = 12.$

Thus, the correct answer is C .