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29 June, 10:20

Mark has 30 cd's. 40% are country music. 30% pop music. How many CDs are other types of music?

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  1. 29 June, 11:26
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    9 cd's because you multiply. 7*30 and that is 21 so 30-21=9
  2. 29 June, 11:52
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    So first you add 40 percent and 30 percent to get 70 percent. After you do that subtract it from 100 to get 30. 30% times 30 is 9 so the answer is 9 cds.
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