SOLUTION: In Tim's Music Shop, the sales of records, tape cartridges, and cassettes form the ratio 3 : 4 : 6, respectively. In a window display of 65 items, how many of each kind should be i

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Question 348185: In Tim's Music Shop, the sales of records, tape cartridges, and cassettes form the ratio 3 : 4 : 6, respectively. In a window display of 65 items, how many of each kind should be included to match the customers' typical preferences?
Answer by Edwin McCravy(20059) About Me  (Show Source):
You can put this solution on YOUR website!
In Tim's Music Shop, the sales of records, tape cartridges, and cassettes form the ratio 3 : 4 : 6, respectively. In a window display of 65 items, how many of each kind should be included to match the customers' typical preferences?

All I can say is that your textbook is very old -- back before CDs even.  Are those tape cartridges 8-tracks?


Put each of the ratio numbers 3, 4 and 6 over their sum 3+4+6 = 13 
making these three fractions

3%2F13, 4%2F13, and 6%2F13

Now multiply each fraction by 65

expr%283%2F13%29%2A65=15, expr%284%2F13%29%2A65=20, expr%286%2F13%29%2A65=30

15 records, 20 tape cartridges, and 30 cassettes.    

Edwin