AMC8 2007

AMC8 2007 · Q2

AMC8 2007 · Q2. It mainly tests Ratios & proportions.

Six-hundred fifty students were surveyed about their pasta preferences. The choices were lasagna, manicotti, ravioli and spaghetti. The results of the survey are displayed in the bar graph. What is the ratio of the number of students who preferred spaghetti to the number of students who preferred manicotti?

有650名学生接受了关于意面偏好的调查。选择有lasagna、manicotti、ravioli和spaghetti。调查结果显示在条形图中。喜欢spaghetti的学生人数与喜欢manicotti的学生人数之比是多少？

(A) 2/5 $\frac{2}{5}$

(B) 1/2 $\frac{1}{2}$

(D) 5/3 $\frac{5}{3}$

(E) 5/2 $\frac{5}{2}$

Answer

Correct choice: (E)

正确答案：（E）

Solution

(E) The ratio of the number of students who preferred spaghetti to the number of students who preferred manicotti is $\frac{250}{100}=\frac{5}{2}$.

（E）喜欢意大利面（spaghetti）的学生人数与喜欢意式烤通心粉（manicotti）的学生人数之比为 $\frac{250}{100}=\frac{5}{2}$。

Topics

AR.004 Ratios & proportions