Question

a survey asked a group of students to list their eye color. the results of the survey are shown in the graph. based on the graph, how many more students in a class of 300 students would be expected to have green eyes than blue eyes? a 10 b 20 c 50 d 90

Explanation:

Step1: Find total surveyed students

From the bar graph, blue eyes: 10, green eyes: 20, brown eyes: 30. Total = \(10 + 20 + 30 = 60\).

Step2: Find difference in surveyed

Green - Blue = \(20 - 10 = 10\) in 60 students.

Step3: Scale to 300 students

Ratio of 300 to 60 is \( \frac{300}{60} = 5 \). Multiply difference: \(10 \times 5 = 50\).

Answer:

C. 50