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Boris has 20 Cd's in his music collection. Given that 20% of the CD's are rock music and 60% of them are pop music. How many CD's are other types of music.
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Boris has 20 Cd's in his music collection. Given that 20% of the CD's are rock music and 60% of them are pop music. How many CD's are other types of music.

User Samthebrand
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It is all the answer u may need look at the picture.
Boris has 20 Cd's in his music collection. Given that 20% of the CD's are rock music-example-1
User Chazsolo
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The total amount of CD's are 100% so 100 - (20+60) = 20% -> the percentage of the other types of music. Then multiply 20% by 20 to get 4. So there are 4 CD's that are other types of music
User Russbear
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