Question

a group of 250 middle school students were asked whether they prefer playing video games or watching tv in their spare time. the genders of the students and their responses are reported in the following table.

	playing video games	watching tv
boys	55	65

(a) what percentage of the students are girls?
(b) what percentage of the students prefer playing video games?

Explanation:

Step1: Calculate number of girls

Number of girls = 45 + 85 = 130

Step2: Calculate percentage of girls

Percentage of girls = $\frac{130}{250}\times100\%= 52\%$

Step3: Calculate number of students who prefer video - games

Number of students who prefer video - games = 45+55 = 100

Step4: Calculate percentage of students who prefer video - games

Percentage of students who prefer video - games = $\frac{100}{250}\times100\% = 40\%$

Answer:

(a) 52%
(b) 40%