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Maksim231197 [3]

3 years ago

8

Harrison has 30 cds in his music collection. If 40% of the cds are country and 30% are pop, how many are other types of music

2 answers:

Pavel [41]3 years ago

8 0

Well you have to find out how many cd is 40% and 30%
30% = 30x.3=9
40% = 30x.4=16
now add 16 and 9
16+9=25 now subtract 25 from 30 and see that you have 5 cd of a different type of music to find that as a % divide 5 by 35 to get .14 I rounded it to the nearest hundreth now move the decimal over 2 spots to get 14%

Westkost [7]3 years ago

7 0

There are 9 other CD's of a different genre.

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Using logarithmic rule: $\log _{b}\left(\frac{M}{N}\right)=\log _{b}(M)-\log _{b}(N)$

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