students preferred dubstep, 25 % of the students liked trance music, and 20 % wanted to hear only house music. Fifteen percent of the respondents selected both dubstep and trance. The proportion of students that like either dubstep or trance is:

Question

Mathematics

Willow Chapman

22 September, 10:54

students preferred dubstep, 25 % of the students liked trance music, and 20 % wanted to hear only house music. Fifteen percent of the respondents selected both dubstep and trance. The proportion of students that like either dubstep or trance is:

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Johnathon · Answer 1

proportion of students that like either dubstep or trance is 40%

Step-by-step explanation:

Students preferring dubstep : Set [DS] = 30%

Students preferring trance music : Set [TM] = 25%

Students preferring house music : Set [HM] = 20%

Students preferring both dubstep & trance : Set [DS ⋂ TM] = 15%

Formula : (A U B) = (A) + (B) - (A ⋂ B)

[ DS U TM ] = [DS] + [TM] - [DS ⋂ TM]

= 30% + 25% - 15% → = 40%