Question
A survey asked 36 students to choose their favorite type of music from the choices of rock, pop, and country. The results of the survey are given below.
• 11 rock
• 16 pop
• 9 country
Based on this information, how many students in a class of 240 students would be expected to choose country as their favorite type of music?
A) 40
B) 60
C) 80
D) 90
Please help!!!
Answers
Bosnian
Calculate the proportion of the second and first group.
240 / 36 = 12 ∙ 20 / 12 ∙ 3 = 20 / 3
Multiply 9 country choice in first group by this proportion.
9 ∙ 20 / 3 = 180 / 3 = 60
240 / 36 = 12 ∙ 20 / 12 ∙ 3 = 20 / 3
Multiply 9 country choice in first group by this proportion.
9 ∙ 20 / 3 = 180 / 3 = 60